PST to MST to CST to EST to ADT to AEDT to NZDT Time Converter

Updating current time…
PST
Pacific Standard Time
UTC−8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
MST
Mountain Standard Time
UTC−7
1h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CST
Central Standard Time
UTC−6
2h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EST
Eastern Standard Time
UTC−5
3h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AST/ADT
Atlantic Standard Time
UTC−4
4h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Atlantic Time is on standard time: AST (UTC−4) until Sun, Mar 14, 2027.
Keep ADT (UTC−3)
AEDT
Australian Eastern Daylight Time
UTC+11
19h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
NZDT
New Zealand Daylight Time
UTC+13
tomorrow (next day)
21h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

4:00 am04:00 PST (UTC-8), Nov 8, 2026 = 5:00 am05:00 MST (UTC-7), Nov 8, 2026 = 6:00 am06:00 CST (UTC-6), Nov 8, 2026 = 7:00 am07:00 EST (UTC-5), Nov 8, 2026 = 8:00 am08:00 AST (UTC-4), Nov 8, 2026 = 11:00 pm23:00 AEDT (UTC+11), Nov 8, 2026 = 1:00 am01:00 NZDT (UTC+13), Nov 9, 2026

PST is 1 hour behind MST. PST is 2 hours behind CST. PST is 3 hours behind EST. PST is 4 hours behind AST. PST is 19 hours behind AEDT. PST is 21 hours behind NZDT.

How the time difference changes

PST to MST

For most of the year, PDT is 1 hour behind MDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, PST is 1 hour behind MST. Briefly around clock changes, PDT and MST have the same time or PST is 2 hours behind MDT.

For most of the year, working hours of 9:00 am to 6:00 pm in PDT correspond to 10:00 am to 7:00 pm in MDT. At other times of the year, working hours of 9:00 am to 6:00 pm in PST correspond to 10:00 am to 7:00 pm in MST.For most of the year, working hours of 09:00 to 18:00 in PDT correspond to 10:00 to 19:00 in MDT. At other times of the year, working hours of 09:00 to 18:00 in PST correspond to 10:00 to 19:00 in MST.

PST to CST

For most of the year, PDT is 2 hours behind CDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, PST is 2 hours behind CST. Briefly around clock changes, PDT is 1 hour behind CST or PST is 3 hours behind CDT.

For most of the year, working hours of 9:00 am to 6:00 pm in PDT correspond to 11:00 am to 8:00 pm in CDT. At other times of the year, working hours of 9:00 am to 6:00 pm in PST correspond to 11:00 am to 8:00 pm in CST.For most of the year, working hours of 09:00 to 18:00 in PDT correspond to 11:00 to 20:00 in CDT. At other times of the year, working hours of 09:00 to 18:00 in PST correspond to 11:00 to 20:00 in CST.

PST to EST

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

For most of the year, working hours of 9:00 am to 6:00 pm in PDT correspond to 12:00 pm to 9:00 pm in EDT. At other times of the year, working hours of 9:00 am to 6:00 pm in PST correspond to 12:00 pm to 9:00 pm in EST.For most of the year, working hours of 09:00 to 18:00 in PDT correspond to 12:00 to 21:00 in EDT. At other times of the year, working hours of 09:00 to 18:00 in PST correspond to 12:00 to 21:00 in EST.

PST to ADT

For most of the year, PDT is 4 hours behind ADT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, PST is 4 hours behind AST. Briefly around clock changes, PDT is 3 hours behind AST or PST is 5 hours behind ADT.

For most of the year, working hours of 9:00 am to 6:00 pm in PDT correspond to 1:00 pm to 10:00 pm in ADT. At other times of the year, working hours of 9:00 am to 6:00 pm in PST correspond to 1:00 pm to 10:00 pm in AST.For most of the year, working hours of 09:00 to 18:00 in PDT correspond to 13:00 to 22:00 in ADT. At other times of the year, working hours of 09:00 to 18:00 in PST correspond to 13:00 to 22:00 in AST.

PST to AEDT

Depending on seasonal clock changes, PDT is 17 hours behind AEST, PDT is 18 hours behind AEDT, or PST is 19 hours behind AEDT.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in PDT correspond to 2:00 am (next day) to 11:00 am (next day) in AEST, working hours of 9:00 am to 6:00 pm in PDT correspond to 3:00 am (next day) to 12:00 pm (next day) in AEDT, or working hours of 9:00 am to 6:00 pm in PST correspond to 4:00 am (next day) to 1:00 pm (next day) in AEDT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in PDT correspond to 02:00 (next day) to 11:00 (next day) in AEST, working hours of 09:00 to 18:00 in PDT correspond to 03:00 (next day) to 12:00 (next day) in AEDT, or working hours of 09:00 to 18:00 in PST correspond to 04:00 (next day) to 13:00 (next day) in AEDT.

PST to NZDT

Depending on seasonal clock changes, PDT is 19 hours behind NZST, PDT is 20 hours behind NZDT, or PST is 21 hours behind NZDT.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in PDT correspond to 4:00 am (next day) to 1:00 pm (next day) in NZST, working hours of 9:00 am to 6:00 pm in PDT correspond to 5:00 am (next day) to 2:00 pm (next day) in NZDT, or working hours of 9:00 am to 6:00 pm in PST correspond to 6:00 am (next day) to 3:00 pm (next day) in NZDT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in PDT correspond to 04:00 (next day) to 13:00 (next day) in NZST, working hours of 09:00 to 18:00 in PDT correspond to 05:00 (next day) to 14:00 (next day) in NZDT, or working hours of 09:00 to 18:00 in PST correspond to 06:00 (next day) to 15:00 (next day) in NZDT.

Compare PST time with MST, CST, EST, ADT, AEDT, and NZDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Pacific Standard Time is 1 hour behind Mountain Standard Time. Pacific Standard Time is 2 hours behind Central Standard Time. Pacific Standard Time is 3 hours behind Eastern Standard Time. Pacific Standard Time is 4 hours behind Atlantic Standard Time. Pacific Standard Time is 19 hours behind Australian Eastern Daylight Time. Pacific Standard Time is 21 hours behind New Zealand Daylight Time.
4:00 am04:00 in PST is 5:00 am05:00 in MST and is 6:00 am06:00 in CST and is 7:00 am07:00 in EST and is 8:00 am08:00 in AST and is 11:00 pm23:00 in AEDT and is 1:00 am01:00 in NZDT (next day)

PST to MST call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in PST which corresponds to 10am-6pm10:00-18:00 in MST.
PST to CST call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in PST which corresponds to 11am-6pm11:00-18:00 in CST.
PST to EST call time
Best time for a conference call or a meeting is between 9am-3pm09:00-15:00 in PST which corresponds to 12pm-6pm12:00-18:00 in EST.
PST to AST call time
Best time for a conference call or a meeting is between 9am-2pm09:00-14:00 in PST which corresponds to 1pm-6pm13:00-18:00 in AST.
PST to AEDT call time
Best time for a conference call or a meeting is between 2pm-6pm14:00-18:00 in PST which corresponds to 9am-1pm09:00-13:00 in AEDT (next day).
PST to NZDT call time
Best time for a conference call or a meeting is between 12pm-6pm12:00-18:00 in PST which corresponds to 9am-3pm09:00-15:00 in NZDT (next day).

4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours
6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
8:00 am08:00 Atlantic Standard Time (AST). Offset UTC -4:00 hours
11:00 pm23:00 Australian Eastern Daylight Time (AEDT). Offset UTC +11:00 hours
1:00 am01:00 New Zealand Daylight Time (NZDT). Offset UTC +13:00 hours

4:00 am04:00 PST / 5:00 am05:00 MST / 6:00 am06:00 CST / 7:00 am07:00 EST / 8:00 am08:00 AST / 11:00 pm23:00 AEDT / 1:00 am01:00 NZDT (next day)

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
PSTMSTCSTESTASTAEDTNZDT
1:00am2:00am3:00am4:00am7:00pm9:00pm
2:00am3:00am4:00am5:00am8:00pm10:00pm
3:00am4:00am5:00am6:00am9:00pm11:00pm
4:00am5:00am6:00am7:00am10:00pm12:00am next day
5:00am6:00am7:00am8:00am11:00pm1:00am next day
6:00am7:00am8:00am9:00am12:00am next day2:00am next day
7:00am8:00am9:00am10:00am1:00am next day3:00am next day
8:00am9:00am10:00am11:00am2:00am next day4:00am next day
9:00am10:00am11:00am12:00pm3:00am next day5:00am next day
10:00am11:00am12:00pm1:00pm4:00am next day6:00am next day
11:00am12:00pm1:00pm2:00pm5:00am next day7:00am next day
12:00pm1:00pm2:00pm3:00pm6:00am next day8:00am next day
1:00pm2:00pm3:00pm4:00pm7:00am next day9:00am next day
2:00pm3:00pm4:00pm5:00pm8:00am next day10:00am next day
3:00pm4:00pm5:00pm6:00pm9:00am next day11:00am next day
4:00pm5:00pm6:00pm7:00pm10:00am next day12:00pm next day
5:00pm6:00pm7:00pm8:00pm11:00am next day1:00pm next day
6:00pm7:00pm8:00pm9:00pm12:00pm next day2:00pm next day
7:00pm8:00pm9:00pm10:00pm1:00pm next day3:00pm next day
8:00pm9:00pm10:00pm11:00pm2:00pm next day4:00pm next day
9:00pm10:00pm11:00pm12:00am next day3:00pm next day5:00pm next day
10:00pm11:00pm12:00am next day1:00am next day4:00pm next day6:00pm next day
11:00pm12:00am next day1:00am next day2:00am next day5:00pm next day7:00pm next day
12:00am next day1:00am next day2:00am next day3:00am next day6:00pm next day8:00pm next day
01:0002:0003:0004:0019:0021:00
02:0003:0004:0005:0020:0022:00
03:0004:0005:0006:0021:0023:00
04:0005:0006:0007:0022:0000:00 next day
05:0006:0007:0008:0023:0001:00 next day
06:0007:0008:0009:0000:00 next day02:00 next day
07:0008:0009:0010:0001:00 next day03:00 next day
08:0009:0010:0011:0002:00 next day04:00 next day
09:0010:0011:0012:0003:00 next day05:00 next day
10:0011:0012:0013:0004:00 next day06:00 next day
11:0012:0013:0014:0005:00 next day07:00 next day
12:0013:0014:0015:0006:00 next day08:00 next day
13:0014:0015:0016:0007:00 next day09:00 next day
14:0015:0016:0017:0008:00 next day10:00 next day
15:0016:0017:0018:0009:00 next day11:00 next day
16:0017:0018:0019:0010:00 next day12:00 next day
17:0018:0019:0020:0011:00 next day13:00 next day
18:0019:0020:0021:0012:00 next day14:00 next day
19:0020:0021:0022:0013:00 next day15:00 next day
20:0021:0022:0023:0014:00 next day16:00 next day
21:0022:0023:0000:00 next day15:00 next day17:00 next day
22:0023:0000:00 next day01:00 next day16:00 next day18:00 next day
23:0000:00 next day01:00 next day02:00 next day17:00 next day19:00 next day
00:00 next day01:00 next day02:00 next day03:00 next day18:00 next day20:00 next day

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

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

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

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

Atlantic Daylight Time

Offset: ADT is 3 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bermuda, Canada, Greenland

Principal Cities: The largest city in the ADT time zone is Halifax in Canada, with about 471,559 people. Other major cities in this time zone include Sydney, Moncton, Saint John, Fredericton.

French: HAA - Heure Avancée de l'Atlantique

Map of the areas on Atlantic Daylight Time (ADT)
ADT part of the year

Today the shaded areas are on UTC−4 (Atlantic Standard Time).

Open the world time zone map© OpenStreetMap

Daylight Saving: Atlantic Daylight Time (ADT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Atlantic Standard Time (AST).

123456789101112End: Atlantic Daylight Time (ADT) ended 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 local standard time instead. Daylight saving ends annually on the first Sunday of November.

123456789101112Start: Atlantic Daylight Time (ADT) starts 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. Daylight saving starts annually on the second Sunday of March.

See Canada daylight saving time and upcoming clock changes worldwide.

ADT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for ADT
  • P - short form of 'Papa'
IANA/Olson: Reflects ADT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Glace_Bay
  • America/Goose_Bay
  • America/Halifax
  • America/Moncton
  • America/Thule
  • Atlantic/Bermuda
  • Canada/Atlantic
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasilia Time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • FKT - Falkland Islands Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • PYT - Paraguay Time
  • SRT - Suriname Time
  • UYT - Uruguay Time

Australian Eastern Daylight Time

Offset: AEDT is 11 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Australia

Principal Cities: The largest city in the AEDT time zone is Sydney in Australia, with about 5.639 million people. Other major cities in this time zone include Melbourne, Newcastle, Canberra, Central Coast.

Map of the areas on Australian Eastern Daylight Time (AEDT)
AEDT part of the year

Today all shaded areas are on AEDT.

Open the world time zone map© OpenStreetMap

Daylight Saving: Australian Eastern Daylight Time (AEDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Australian Eastern Standard Time (AEST).

123456789101112Start: Australian Eastern Daylight Time (AEDT) started 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. Daylight saving starts annually on the first Sunday of October.

123456789101112End: Australian Eastern Daylight Time (AEDT) ends 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 local standard time instead. Daylight saving ends annually on the first Sunday of April.

See Australia daylight saving time and upcoming clock changes worldwide.

Australian Eastern Daylight Time (AEDT) is observer in New South Wales (except Broken Hill and Lord Howe Island), Victoria, Tasmania, Australian Capital Territory, Sydney, Melbourne, Hobart, Canberra AEDT is equal to Coordinated Universal Time plus 11 hours (UTC +11). During a summer time period, these locations move from AEST to Australian Eastern Daylight Time (AEDT), and clocks are advanced to UTC +11.

Daylight saving or summer time is commonly expressed as AEDT (Australian Eastern Daylight Time). In periods of daylight saving an hour is added to the Local Standard Time.

The regulation of time is a State Government responsibility. Changes to the period of daylight saving may be made by regulation. Legislation to harmonise daylight saving in NSW with the south-eastern states and the ACT was passed by the NSW Parliament on 23 October 2007.

History of daylight saving in New South Wales
Daylight saving operated nationally for single summer during World War I from 1 January 1917 to 25 March 1917 and during World War II for three summers in a row, starting on 1 January 1942. Daylight saving was re-introduced for third time in New South Wales on 31 October 1971 after New South Wales Parliament passed the Standard Time Act 1971. A referendum held on 1 May 1976 proposed that daylight saving should be on a permanent basis. The ballot paper stated: "At present there is a period commonly called 'daylight saving' by which time is advanced by one hour for the period commencing on the last Sunday in October in each year and ending on the first Sunday in March in the following year. Electors were then asked to answer YES or NO to the question: Are you in favour of daylight saving? 1,882,770 electors were in favour, 868,900 were against and 35,507 votes were informal.\" The period of daylight saving is prescribed by the Daylight Saving Regulations 2008, made under the Daylight Saving Act 2007. Since April 2008, daylight saving has been synchronised across Tasmania, New South Wales, Victoria, the ACT and South Australia, although South Australia remains half an hour behind throughout the year due to the observance of Australian Central Standard Time.

Which is correct Daylight Savings or Daylight Saving (with or without the 's' at the end)? The correct spelling in Australia is without the 's'.

AEDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +11 - basic short
  • +1100 - basic
  • +11:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1100 - sign character (+) followed by a four digit time providing hours (11) and minutes (00) of the offset. Indicates an offset of eleven hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Lima - Military abbreviation for AEDT
  • L - short form of 'Lima'
IANA/Olson: Reflects AEDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/Macquarie
  • Australia/ACT
  • Australia/Canberra
  • Australia/Currie
  • Australia/Hobart
  • Australia/Melbourne
  • Australia/NSW
  • Australia/Sydney
  • Australia/Tasmania
  • Australia/Victoria
Time zones with the GMT +11 offset:
  • AEDT - Australian Eastern Daylight Time
  • BST - Bougainville Standard Time
  • KOST - Kosrae Time
  • L - Lima Time Zone
  • LHDT - Lord Howe Daylight Time
  • MAGT - Magadan Time
  • NCT - New Caledonia Time
  • NFT - Norfolk Time
  • PONT - Pohnpei Standard Time
  • SBT - Solomon Islands Time
  • VLAST - Vladivostok Summer Time
  • VUT - Vanuatu Time

New Zealand Daylight Time

Offset: NZDT is 13 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, New Zealand

Principal Cities: The largest city in the NZDT time zone is Auckland in New Zealand, with about 1.547 million people. Other major cities in this time zone include Christchurch, Wellington, Hamilton, Tauranga.

Map of the areas on New Zealand Daylight Time (NZDT)
NZDT part of the year

Today all shaded areas are on NZDT.

Open the world time zone map© OpenStreetMap

Daylight Saving: New Zealand Daylight Time (NZDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe New Zealand Standard Time (NZST).

123456789101112Start: New Zealand Daylight Time (NZDT) started on Sunday, September 27, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:00 am03:00. Daylight saving starts annually on the last Sunday of September.

123456789101112End: New Zealand Daylight Time (NZDT) ends 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 local standard time instead. Daylight saving ends annually on the first Sunday of April.

See New Zealand daylight saving time and upcoming clock changes worldwide.

NZDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +13 - basic short
  • +1300 - basic
  • +13:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1300 - sign character (+) followed by a four digit time providing hours (13) and minutes (00) of the offset. Indicates an offset of thirteen hours to the east of the zero meridian.
IANA/Olson: Reflects NZDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/McMurdo
  • Antarctica/South_Pole
  • NZ
  • Pacific/Auckland
Time zones with the GMT +13 offset:
  • FJST - Fiji Summer Time
  • NZDT - New Zealand Daylight Time
  • PHOT - Phoenix Island Time
  • TKT - Tokelau Time
  • TOT - Tonga Time
  • WST - West Samoa Time
  • WSST - West Samoa Standard Time