EST to CST to MST to PST to AKST to GMT to ACST to AWST to HKT Time Converter

Updating current time…
EST
Eastern Standard Time
UTC−5
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CST
Central Standard Time
UTC−6
1h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
MST
Mountain Standard Time
UTC−7
2h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PST
Pacific Standard Time
UTC−8
3h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AKST
Alaska Standard Time
UTC−9
4h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GMT
Greenwich Mean Time
UTC+0
5h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ACST
Australian Central Standard Time
UTC+9:30
14h 30m ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
South Australia is on daylight saving time: ACDT (UTC+10:30) until Sun, Apr 4, 2027.

The Northern Territory stays on ACST (UTC+9:30).

AWST
Australian Western Standard Time
UTC+8
13h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
HKT
Hong Kong Time
UTC+8
13h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

7:00 am07:00 EST (UTC-5), Nov 13, 2026 = 6:00 am06:00 CST (UTC-6), Nov 13, 2026 = 5:00 am05:00 MST (UTC-7), Nov 13, 2026 = 4:00 am04:00 PST (UTC-8), Nov 13, 2026 = 3:00 am03:00 AKST (UTC-9), Nov 13, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 13, 2026 = 9:30 pm21:30 ACST (UTC+9:30), Nov 13, 2026 = 8:00 pm20:00 AWST (UTC+8), Nov 13, 2026 = 8:00 pm20:00 HKT (UTC+8), Nov 13, 2026

EST is 1 hour ahead of CST. EST is 2 hours ahead of MST. EST is 3 hours ahead of PST. EST is 4 hours ahead of AKST. EST is 5 hours behind GMT. EST is 14 hours and 30 minutes behind ACST. EST is 13 hours behind AWST. EST is 13 hours behind HKT.

How the time difference changes

EST to CST

For most of the year, EDT is 1 hour ahead of CDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, EST is 1 hour ahead of CST. Briefly around clock changes, EDT is 2 hours ahead of CST or EST and CDT have the same time.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 8:00 am to 5:00 pm in CDT. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 8:00 am to 5:00 pm in CST.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 08:00 to 17:00 in CDT. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 08:00 to 17:00 in CST.

EST to MST

For most of the year, EDT is 2 hours ahead of MDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, EST is 2 hours ahead of MST. Briefly around clock changes, EDT is 3 hours ahead of MST or EST is 1 hour ahead of MDT.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 7:00 am to 4:00 pm in MDT. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 7:00 am to 4:00 pm in MST.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 07:00 to 16:00 in MDT. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 07:00 to 16:00 in MST.

EST to PST

For most of the year, EDT is 3 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, EST is 3 hours ahead of PST. Briefly around clock changes, EDT is 4 hours ahead of PST or EST is 2 hours ahead of PDT.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 6:00 am to 3:00 pm in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 6:00 am to 3:00 pm in PST.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 06:00 to 15:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 06:00 to 15:00 in PST.

EST to AKST

For most of the year, EDT is 4 hours ahead of AKDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, EST is 4 hours ahead of AKST. Briefly around clock changes, EDT is 5 hours ahead of AKST or EST is 3 hours ahead of AKDT.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 5:00 am to 2:00 pm in AKDT. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 5:00 am to 2:00 pm in AKST.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 05:00 to 14:00 in AKDT. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 05:00 to 14:00 in AKST.

EST to GMT

For most of the year, EDT is 4 hours behind GMT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, EST is 5 hours behind GMT.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 1:00 pm to 10:00 pm in GMT. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 2:00 pm to 11:00 pm in GMT.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 13:00 to 22:00 in GMT. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 14:00 to 23:00 in GMT.

EST to ACST

For most of the year, EDT is 13 hours and 30 minutes behind ACST. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, EST is 14 hours and 30 minutes behind ACST.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 10:30 pm to 7:30 am (next day) in ACST. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 11:30 pm to 8:30 am (next day) in ACST.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 22:30 to 07:30 (next day) in ACST. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 23:30 to 08:30 (next day) in ACST.

EST to AWST

For most of the year, EDT is 12 hours behind AWST. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, EST is 13 hours behind AWST.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 9:00 pm to 6:00 am (next day) in AWST. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 10:00 pm to 7:00 am (next day) in AWST.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 21:00 to 06:00 (next day) in AWST. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 22:00 to 07:00 (next day) in AWST.

EST to HKT

For most of the year, EDT is 12 hours behind HKT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, EST is 13 hours behind HKT.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 9:00 pm to 6:00 am (next day) in HKT. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 10:00 pm to 7:00 am (next day) in HKT.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 21:00 to 06:00 (next day) in HKT. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 22:00 to 07:00 (next day) in HKT.

Compare EST time with CST, MST, PST, AKST, GMT, ACST, AWST, and HKT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Eastern Standard Time is 1 hour ahead of Central Standard Time. Eastern Standard Time is 2 hours ahead of Mountain Standard Time. Eastern Standard Time is 3 hours ahead of Pacific Standard Time. Eastern Standard Time is 4 hours ahead of Alaska Standard Time. Eastern Standard Time is 5 hours behind Greenwich Mean Time. Eastern Standard Time is 14 hours and 30 minutes behind Australian Central Standard Time. Eastern Standard Time is 13 hours behind Australian Western Standard Time. Eastern Standard Time is 13 hours behind Hong Kong Time.
7:00 am07:00 in EST is 6:00 am06:00 in CST and is 5:00 am05:00 in MST and is 4:00 am04:00 in PST and is 3:00 am03:00 in AKST and is 12:00 pm12:00 in GMT and is 9:30 pm21:30 in ACST and is 8:00 pm20:00 in AWST and is 8:00 pm20:00 in HKT

EST to CST call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in EST which corresponds to 9am-5pm09:00-17:00 in CST.
EST to MST call time
Best time for a conference call or a meeting is between 11am-6pm11:00-18:00 in EST which corresponds to 9am-4pm09:00-16:00 in MST.
EST to PST call time
Best time for a conference call or a meeting is between 12pm-6pm12:00-18:00 in EST which corresponds to 9am-3pm09:00-15:00 in PST.
EST to AKST call time
Best time for a conference call or a meeting is between 1pm-6pm13:00-18:00 in EST which corresponds to 9am-2pm09:00-14:00 in AKST.
EST to GMT call time
Best time for a conference call or a meeting is between 9am-1pm09:00-13:00 in EST which corresponds to 2pm-6pm14:00-18:00 in GMT.
EST to ACST call time
Best time for a conference call or a meeting is between 6pm-7pm18:00-19:00 in EST which corresponds to 8:30am-9:30am08:30-09:30 in ACST (next day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
EST to AWST call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in EST which corresponds to 7:30am-8:30am07:30-08:30 in AWST (next day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
EST to HKT call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in EST which corresponds to 7:30am-8:30am07:30-08:30 in HKT (next day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.

7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours
5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
3:00 am03:00 Alaska Standard Time (AKST). Offset UTC -9:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
9:30 pm21:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours
8:00 pm20:00 Australian Western Standard Time (AWST). Offset UTC +8:00 hours
8:00 pm20:00 Hong Kong Time (HKT). Offset UTC +8:00 hours

7:00 am07:00 EST / 6:00 am06:00 CST / 5:00 am05:00 MST / 4:00 am04:00 PST / 3:00 am03:00 AKST / 12:00 pm12:00 GMT / 9:30 pm21:30 ACST / 8:00 pm20:00 AWST / 8:00 pm20:00 HKT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
ESTCSTMSTPSTAKSTGMTACSTAWSTHKT
11:00pm previous day10:00pm previous day9:00pm previous day8:00pm previous day5:00am2:30pm1:00pm1:00pm
12:00am11:00pm previous day10:00pm previous day9:00pm previous day6:00am3:30pm2:00pm2:00pm
1:00am12:00am11:00pm previous day10:00pm previous day7:00am4:30pm3:00pm3:00pm
2:00am1:00am12:00am11:00pm previous day8:00am5:30pm4:00pm4:00pm
3:00am2:00am1:00am12:00am9:00am6:30pm5:00pm5:00pm
4:00am3:00am2:00am1:00am10:00am7:30pm6:00pm6:00pm
5:00am4:00am3:00am2:00am11:00am8:30pm7:00pm7:00pm
6:00am5:00am4:00am3:00am12:00pm9:30pm8:00pm8:00pm
7:00am6:00am5:00am4:00am1:00pm10:30pm9:00pm9:00pm
8:00am7:00am6:00am5:00am2:00pm11:30pm10:00pm10:00pm
9:00am8:00am7:00am6:00am3:00pm12:30am next day11:00pm11:00pm
10:00am9:00am8:00am7:00am4:00pm1:30am next day12:00am next day12:00am next day
11:00am10:00am9:00am8:00am5:00pm2:30am next day1:00am next day1:00am next day
12:00pm11:00am10:00am9:00am6:00pm3:30am next day2:00am next day2:00am next day
1:00pm12:00pm11:00am10:00am7:00pm4:30am next day3:00am next day3:00am next day
2:00pm1:00pm12:00pm11:00am8:00pm5:30am next day4:00am next day4:00am next day
3:00pm2:00pm1:00pm12:00pm9:00pm6:30am next day5:00am next day5:00am next day
4:00pm3:00pm2:00pm1:00pm10:00pm7:30am next day6:00am next day6:00am next day
5:00pm4:00pm3:00pm2:00pm11:00pm8:30am next day7:00am next day7:00am next day
6:00pm5:00pm4:00pm3:00pm12:00am next day9:30am next day8:00am next day8:00am next day
7:00pm6:00pm5:00pm4:00pm1:00am next day10:30am next day9:00am next day9:00am next day
8:00pm7:00pm6:00pm5:00pm2:00am next day11:30am next day10:00am next day10:00am next day
9:00pm8:00pm7:00pm6:00pm3:00am next day12:30pm next day11:00am next day11:00am next day
10:00pm9:00pm8:00pm7:00pm4:00am next day1:30pm next day12:00pm next day12:00pm next day
23:00 previous day22:00 previous day21:00 previous day20:00 previous day05:0014:3013:0013:00
00:0023:00 previous day22:00 previous day21:00 previous day06:0015:3014:0014:00
01:0000:0023:00 previous day22:00 previous day07:0016:3015:0015:00
02:0001:0000:0023:00 previous day08:0017:3016:0016:00
03:0002:0001:0000:0009:0018:3017:0017:00
04:0003:0002:0001:0010:0019:3018:0018:00
05:0004:0003:0002:0011:0020:3019:0019:00
06:0005:0004:0003:0012:0021:3020:0020:00
07:0006:0005:0004:0013:0022:3021:0021:00
08:0007:0006:0005:0014:0023:3022:0022:00
09:0008:0007:0006:0015:0000:30 next day23:0023:00
10:0009:0008:0007:0016:0001:30 next day00:00 next day00:00 next day
11:0010:0009:0008:0017:0002:30 next day01:00 next day01:00 next day
12:0011:0010:0009:0018:0003:30 next day02:00 next day02:00 next day
13:0012:0011:0010:0019:0004:30 next day03:00 next day03:00 next day
14:0013:0012:0011:0020:0005:30 next day04:00 next day04:00 next day
15:0014:0013:0012:0021:0006:30 next day05:00 next day05:00 next day
16:0015:0014:0013:0022:0007:30 next day06:00 next day06:00 next day
17:0016:0015:0014:0023:0008:30 next day07:00 next day07:00 next day
18:0017:0016:0015:0000:00 next day09:30 next day08:00 next day08:00 next day
19:0018:0017:0016:0001:00 next day10:30 next day09:00 next day09:00 next day
20:0019:0018:0017:0002:00 next day11:30 next day10:00 next day10:00 next day
21:0020:0019:0018:0003:00 next day12:30 next day11:00 next day11:00 next day
22:0021:0020:0019:0004:00 next day13:30 next day12:00 next day12:00 next day

Eastern Standard Time

Offset: EST is 5 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, United States

Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Montréal, Philadelphia, Port-au-Prince.

French: HNE - Heure Normale de l'Est

Spanish: ET - Tiempo del Este, ET - Zona Sureste

Map of the areas on Eastern Standard Time (EST)
EST all year EST part of the year

Today all shaded areas are on EST.

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Eastern Daylight Time (EDT).

123456789101112Start: Eastern Standard Time (EST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Eastern Standard Time (EST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

EST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for EST
  • R - short form of 'Romeo'
IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Atikokan
  • America/Cancun
  • America/Cayman
  • America/Coral_Harbour
  • America/Detroit
  • America/Fort_Wayne
  • America/Grand_Turk
  • America/Indiana/Indianapolis
  • America/Indiana/Marengo
  • America/Indiana/Petersburg
  • America/Indiana/Vevay
  • America/Indiana/Vincennes
  • America/Indiana/Winamac
  • America/Indianapolis
  • America/Iqaluit
  • America/Jamaica
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Panama
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST
  • EST5EDT
  • Jamaica
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone

Central Standard Time

Offset: CST is 6 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Belize, Canada, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, United States

Principal Cities: The largest city in the CST time zone is Mexico City in Mexico, with about 12.294 million people. Other major cities in this time zone include Chicago, Houston, Puebla, Santiago de Querétaro.

French: HNC - Heure Normale du Centre

Spanish: CT - Tiempo Central Estándar, CT - Zona Centro

Map of the areas on Central Standard Time (CST)
CST all year CST part of the year

Today all shaded areas are on CST.

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Central Daylight Time (CDT).

123456789101112Start: Central Standard Time (CST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Central Standard Time (CST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

CST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -06 - basic short
  • -0600 - basic
  • -06:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Sierra - Military abbreviation for CST
  • S - short form of 'Sierra'
IANA/Olson: Reflects CST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Bahia_Banderas
  • America/Belize
  • America/Chicago
  • America/Chihuahua
  • America/Costa_Rica
  • America/El_Salvador
  • America/Guatemala
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • America/Managua
  • America/Matamoros
  • America/Menominee
  • America/Merida
  • America/Mexico_City
  • America/Monterrey
  • America/North_Dakota/Beulah
  • America/North_Dakota/Center
  • America/North_Dakota/New_Salem
  • America/Ojinaga
  • America/Rainy_River
  • America/Rankin_Inlet
  • America/Regina
  • America/Resolute
  • America/Swift_Current
  • America/Tegucigalpa
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • Canada/Saskatchewan
  • Mexico/General
  • US/Central
  • US/Indiana-Starke
CST Abbreviation: Several time zones share CST abbreviation and it could refer to these time zones
  • Central Standard Time - UTC -6
  • China Standard Time - UTC +8
  • Cuba Standard Time - UTC -5
Time zones with the GMT -6 offset:
  • CST - Central Standard Time
  • CT - Central Time
  • MDT - Mountain Daylight Time
  • EAST - Easter Island Standard Time
  • GALT - Galapagos Time
  • S - Sierra Time Zone

Mountain Standard Time

Offset: MST is 7 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the MST time zone is Phoenix in the United States, with about 1.65 million people. Other major cities in this time zone include Ciudad Juárez, Hermosillo, Culiacán, Denver.

French: HNR - Heure Normale des Rocheuses

Spanish: MT - Zona Pacífico

Map of the areas on Mountain Standard Time (MST)
MST all year MST part of the year

Today all shaded areas are on MST.

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Mountain Daylight Time (MDT).

123456789101112Start: Mountain Standard Time (MST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Mountain Standard Time (MST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

MST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -07 - basic short
  • -0700 - basic
  • -07:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Tango - Military abbreviation for MST
  • T - short form of 'Tango'
IANA/Olson: Reflects MST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Boise
  • America/Cambridge_Bay
  • America/Ciudad_Juarez
  • America/Creston
  • America/Dawson
  • America/Dawson_Creek
  • America/Denver
  • America/Edmonton
  • America/Fort_Nelson
  • America/Hermosillo
  • America/Inuvik
  • America/Mazatlan
  • America/Phoenix
  • America/Shiprock
  • America/Whitehorse
  • America/Yellowknife
  • Canada/Mountain
  • Canada/Yukon
  • MST
  • MST7MDT
  • Mexico/BajaSur
  • Navajo
  • US/Arizona
  • US/Mountain
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone

Pacific Standard Time

Offset: PST is 8 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Mexico, United States

Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste

Map of the areas on Pacific Standard Time (PST)
PST part of the year

Today all shaded areas are on PST.

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).

123456789101112Start: Pacific Standard Time (PST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Pacific Standard Time (PST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

PST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for PST
  • U - short form of 'Uniform'
IANA/Olson: Reflects PST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones
  • Pacific Standard Time - UTC -8
  • Pitcairn Standard Time - UTC -8
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone

Alaska Standard Time

Offset: AKST is 9 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: United States

Principal Cities: The largest city in the AKST time zone is Anchorage in the United States, with about 289,600 people. Other major cities in this time zone include Fairbanks, Juneau, Knik-Fairview, Wasilla.

Map of the areas on Alaska Standard Time (AKST)
AKST part of the year

Today all shaded areas are on AKST.

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Alaska Daylight Time (AKDT).

123456789101112Start: Alaska Standard Time (AKST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Alaska Standard Time (AKST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

AKST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -09 - basic short
  • -0900 - basic
  • -09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0900 - sign character (-) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Victor - Military abbreviation for AKST
  • V - short form of 'Victor'
IANA/Olson: Reflects AKST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Anchorage
  • America/Juneau
  • America/Metlakatla
  • America/Nome
  • America/Sitka
  • America/Yakutat
  • US/Alaska
Time zones with the GMT -9 offset:
  • AKST - Alaska Standard Time
  • AHDT - Alaska-Hawaii Daylight Time
  • HADT - Hawaii-Aleutian Daylight Time
  • GAMT - Gambier Time
  • HDT - Hawaii-Aleutian Daylight Time
  • V - Victor Time Zone

Greenwich Mean Time

Offset: GMT is the same as Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, Burkina Faso, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Togo, United Kingdom, Western Sahara

Principal Cities: The largest city in the GMT time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.

Map of the areas on Greenwich Mean Time (GMT)
GMT all year GMT part of the year

Today all shaded areas are on GMT.

Open the world time zone map© OpenStreetMap

GMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for GMT
  • Z - short form of 'Zulu'
IANA/Olson: Reflects GMT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Abidjan
  • Africa/Accra
  • Africa/Bamako
  • Africa/Banjul
  • Africa/Bissau
  • Africa/Conakry
  • Africa/Dakar
  • Africa/Freetown
  • Africa/Lome
  • Africa/Monrovia
  • Africa/Nouakchott
  • Africa/Ouagadougou
  • Africa/Sao_Tome
  • Africa/Timbuktu
  • America/Danmarkshavn
  • Atlantic/Reykjavik
  • Atlantic/St_Helena
  • Eire
  • Etc/GMT
  • Etc/GMT+0
  • Etc/GMT-0
  • Etc/GMT0
  • Etc/Greenwich
  • Europe/Belfast
  • Europe/Dublin
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
  • GMT
  • GMT+0
  • GMT-0
  • GMT0
  • Greenwich
  • Iceland
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Coordinated Universal Time
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Australian Central Standard Time

Offset: ACST is 9 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Australia

Principal Cities: The largest city in the ACST time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Darwin, Palmerston, Alice Springs, Mount Gambier.

Map of the areas on Australian Central Standard Time (ACST)
ACST all year ACST part of the year

Today the lighter areas are on UTC+10:30 (ACDT).

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Australian Central Daylight Time (ACDT).

123456789101112End: Australian Central Standard Time (ACST) ended on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the first Sunday of October.

123456789101112Start: Australian Central Standard Time (ACST) starts on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00. Standard time starts annually on the first Sunday of April.

See Australia daylight saving time and upcoming clock changes worldwide.

ACST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0930 - basic
  • +09:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0930 - sign character (+) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates an offset of nine hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects ACST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Adelaide
  • Australia/Broken_Hill
  • Australia/Darwin
  • Australia/North
  • Australia/South
  • Australia/Yancowinna

Australian Western Standard Time

Offset: AWST is 8 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Australia

Principal Cities: The largest city in the AWST time zone is Perth in Australia, with about 2.384 million people. Other major cities in this time zone include Mandurah, Bunbury, Geraldton, Albany.

Daylight Saving: Clocks in Australian Western Standard Time (AWST) do not change for daylight saving time, so AWST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Map of the areas on Australian Western Standard Time (AWST)
AWST all year

Open the world time zone map© OpenStreetMap

AWST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +08 - basic short
  • +0800 - basic
  • +08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0800 - sign character (+) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for AWST
  • H - short form of 'Hotel'
IANA/Olson: Reflects AWST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Perth
  • Australia/West
Time zones with the GMT +8 offset:
  • ACT - ASEAN Common Time
  • AWST - Australian Western Standard Time
  • BNT - Brunei Darussalam Time
  • CAST - Casey Time
  • CHOT - Choibalsan Time
  • CST - China Standard Time
  • H - Hotel Time Zone
  • HKT - Hong Kong Time
  • HOVST - Hovd Summer Time
  • IRKT - Irkutsk Time
  • KRAST - Krasnoyarsk Summer Time
  • MYT - Malaysia Time
  • PHT - Philippine Time
  • SGT - Singapore Time
  • ULAT - Ulaanbaatar Time
  • WITA - Central Indonesian Time

Hong Kong Time

Offset: HKT is 8 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Hong Kong

Principal Cities: The largest city in the HKT time zone is Hong Kong in Hong Kong, with about 7.396 million people.

Daylight Saving: Clocks in Hong Kong Time (HKT) do not change for daylight saving time, so HKT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Map of the areas on Hong Kong Time (HKT)
HKT all year

Open the world time zone map© OpenStreetMap

HKT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +08 - basic short
  • +0800 - basic
  • +08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0800 - sign character (+) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for HKT
  • H - short form of 'Hotel'
IANA/Olson: Reflects HKT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Hong_Kong
  • Hongkong
Time zones with the GMT +8 offset:
  • ACT - ASEAN Common Time
  • AWST - Australian Western Standard Time
  • BNT - Brunei Darussalam Time
  • CAST - Casey Time
  • CHOT - Choibalsan Time
  • CST - China Standard Time
  • H - Hotel Time Zone
  • HKT - Hong Kong Time
  • HOVST - Hovd Summer Time
  • IRKT - Irkutsk Time
  • KRAST - Krasnoyarsk Summer Time
  • MYT - Malaysia Time
  • PHT - Philippine Time
  • SGT - Singapore Time
  • ULAT - Ulaanbaatar Time
  • WITA - Central Indonesian Time