BST
UTC+1
Tue, Oct 6
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EDT
UTC−4
Mon, Oct 5 (previous day)
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CDT
UTC−5
Mon, Oct 5 (previous day)
12am
3am
6am
9am
12pm
3pm
6pm
9pm
MDT
UTC−6
Mon, Oct 5 (previous day)
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PDT
UTC−7
Mon, Oct 5 (previous day)
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

12:00 am00:00 BST (UTC+1), Oct 6, 2020 = 7:00 pm19:00 EDT (UTC-4), Oct 5, 2020 = 6:00 pm18:00 CDT (UTC-5), Oct 5, 2020 = 5:00 pm17:00 MDT (UTC-6), Oct 5, 2020 = 4:00 pm16:00 PDT (UTC-7), Oct 5, 2020

BST is 5 hours ahead of EDT. BST is 6 hours ahead of CDT. BST is 7 hours ahead of MDT. BST is 8 hours ahead of PDT.

How the time difference changes

BST to EDT

For most of the year, BST is 5 hours ahead of EDT. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, GMT is 4 hours ahead of EDT. From Nov 1, 2026 to Mar 14, 2027, GMT is 5 hours ahead of EST.

For most of the year, working hours of 9:00 am to 5:00 pm in BST correspond to 4:00 am to 12:00 pm in EDT. At other times of the year, working hours of 9:00 am to 5:00 pm in GMT correspond to 4:00 am to 12:00 pm in EST or working hours of 9:00 am to 5:00 pm in GMT correspond to 5:00 am to 1:00 pm in EDT.For most of the year, working hours of 09:00 to 17:00 in BST correspond to 04:00 to 12:00 in EDT. At other times of the year, working hours of 09:00 to 17:00 in GMT correspond to 04:00 to 12:00 in EST or working hours of 09:00 to 17:00 in GMT correspond to 05:00 to 13:00 in EDT.

BST to CDT

For most of the year, BST is 6 hours ahead of CDT. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, GMT is 5 hours ahead of CDT. From Nov 1, 2026 to Mar 14, 2027, GMT is 6 hours ahead of CST.

For most of the year, working hours of 9:00 am to 5:00 pm in BST correspond to 3:00 am to 11:00 am in CDT. At other times of the year, working hours of 9:00 am to 5:00 pm in GMT correspond to 3:00 am to 11:00 am in CST or working hours of 9:00 am to 5:00 pm in GMT correspond to 4:00 am to 12:00 pm in CDT.For most of the year, working hours of 09:00 to 17:00 in BST correspond to 03:00 to 11:00 in CDT. At other times of the year, working hours of 09:00 to 17:00 in GMT correspond to 03:00 to 11:00 in CST or working hours of 09:00 to 17:00 in GMT correspond to 04:00 to 12:00 in CDT.

BST to MDT

For most of the year, BST is 7 hours ahead of MDT. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, GMT is 6 hours ahead of MDT. From Nov 1, 2026 to Mar 14, 2027, GMT is 7 hours ahead of MST.

For most of the year, working hours of 9:00 am to 5:00 pm in BST correspond to 2:00 am to 10:00 am in MDT. At other times of the year, working hours of 9:00 am to 5:00 pm in GMT correspond to 2:00 am to 10:00 am in MST or working hours of 9:00 am to 5:00 pm in GMT correspond to 3:00 am to 11:00 am in MDT.For most of the year, working hours of 09:00 to 17:00 in BST correspond to 02:00 to 10:00 in MDT. At other times of the year, working hours of 09:00 to 17:00 in GMT correspond to 02:00 to 10:00 in MST or working hours of 09:00 to 17:00 in GMT correspond to 03:00 to 11:00 in MDT.

BST to PDT

For most of the year, BST is 8 hours ahead of PDT. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, GMT is 7 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, GMT is 8 hours ahead of PST.

For most of the year, working hours of 9:00 am to 5:00 pm in BST correspond to 1:00 am to 9:00 am in PDT. At other times of the year, working hours of 9:00 am to 5:00 pm in GMT correspond to 1:00 am to 9:00 am in PST or working hours of 9:00 am to 5:00 pm in GMT correspond to 2:00 am to 10:00 am in PDT.For most of the year, working hours of 09:00 to 17:00 in BST correspond to 01:00 to 09:00 in PDT. At other times of the year, working hours of 09:00 to 17:00 in GMT correspond to 01:00 to 09:00 in PST or working hours of 09:00 to 17:00 in GMT correspond to 02:00 to 10:00 in PDT.

Compare BST time with EDT, CDT, MDT, and PDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

British Summer Time is 5 hours ahead of Eastern Daylight Time. British Summer Time is 6 hours ahead of Central Daylight Time. British Summer Time is 7 hours ahead of Mountain Daylight Time. British Summer Time is 8 hours ahead of Pacific Daylight Time.
12:00 am00:00 in BST is 7:00 pm19:00 in EDT and is 6:00 pm18:00 in CDT and is 5:00 pm17:00 in MDT and is 4:00 pm16:00 in PDT

BST to EDT call time
Best time for a conference call or a meeting is between 2pm-5pm14:00-17:00 in BST which corresponds to 9am-12pm09:00-12:00 in EDT
BST to CDT call time
Best time for a conference call or a meeting is between 3pm-5pm15:00-17:00 in BST which corresponds to 9am-11am09:00-11:00 in CDT
BST to MDT call time
Best time for a conference call or a meeting is between 4pm-5pm16:00-17:00 in BST which corresponds to 9am-10am09:00-10:00 in MDT
BST to PDT call time
Best time for a conference call or a meeting is between 4:30pm-5:30pm16:30-17:30 in BST which corresponds to 8:30am-9:30am08:30-09:30 in PDT. Their 9am–5pm09:00–17:00 working hours do not overlap; this is a suggested compromise.

12:00 am00:00 British Summer Time (BST). Offset UTC +1:00 hour
7:00 pm19:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
6:00 pm18:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
5:00 pm17:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
4:00 pm16:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours

12:00 am00:00 BST / 7:00 pm19:00 EDT / 6:00 pm18:00 CDT / 5:00 pm17:00 MDT / 4:00 pm16:00 PDT

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
BSTEDTCDTMDTPDT
7:00pm previous day6:00pm previous day5:00pm previous day4:00pm previous day
8:00pm previous day7:00pm previous day6:00pm previous day5:00pm previous day
9:00pm previous day8:00pm previous day7:00pm previous day6:00pm previous day
10:00pm previous day9:00pm previous day8:00pm previous day7:00pm previous day
11:00pm previous day10:00pm previous day9:00pm previous day8:00pm previous day
12:00am11:00pm previous day10:00pm previous day9:00pm previous day
1:00am12:00am11:00pm previous day10:00pm previous day
2:00am1:00am12:00am11:00pm previous day
3:00am2:00am1:00am12:00am
4:00am3:00am2:00am1:00am
5:00am4:00am3:00am2:00am
6:00am5:00am4:00am3:00am
7:00am6:00am5:00am4:00am
8:00am7:00am6:00am5:00am
9:00am8:00am7:00am6:00am
10:00am9:00am8:00am7:00am
11:00am10:00am9:00am8:00am
12:00pm11:00am10:00am9:00am
1:00pm12:00pm11:00am10:00am
2:00pm1:00pm12:00pm11:00am
3:00pm2:00pm1:00pm12:00pm
4:00pm3:00pm2:00pm1:00pm
5:00pm4:00pm3:00pm2:00pm
6:00pm5:00pm4:00pm3:00pm
19:00 previous day18:00 previous day17:00 previous day16:00 previous day
20:00 previous day19:00 previous day18:00 previous day17:00 previous day
21:00 previous day20:00 previous day19:00 previous day18:00 previous day
22:00 previous day21:00 previous day20:00 previous day19:00 previous day
23:00 previous day22:00 previous day21:00 previous day20:00 previous day
00:0023:00 previous day22:00 previous day21:00 previous day
01:0000:0023:00 previous day22:00 previous day
02:0001:0000:0023:00 previous day
03:0002:0001:0000:00
04:0003:0002:0001:00
05:0004:0003:0002:00
06:0005:0004:0003:00
07:0006:0005:0004:00
08:0007:0006:0005:00
09:0008:0007:0006:00
10:0009:0008:0007:00
11:0010:0009:0008:00
12:0011:0010:0009:00
13:0012:0011:0010:00
14:0013:0012:0011:00
15:0014:0013:0012:00
16:0015:0014:0013:00
17:0016:0015:0014:00
18:0017:0016:0015:00

British Summer Time

Offset: BST is 1 hour ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Britain (UK), Guernsey, Isle of Man, Jersey

Principal Cities: The largest city in the BST time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Birmingham, Glasgow, Manchester, Sheffield.

Map of the areas on British Summer Time (BST)
BST part of the year

On October 6, 2020 all shaded areas are on BST.

Daylight Saving: British Summer Time (BST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Greenwich Mean Time (GMT).

123456789101112Start: British Summer Time (BST) started on Sunday, March 29, 2020 at 1:00 am01:00 local time and clocks were set one hour forward to Sunday, March 29, 2020, 2:00 am02:00. Daylight saving starts annually on the last Sunday of March.

123456789101112End: British Summer Time (BST) ends on Sunday, October 25, 2020 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, October 25, 2020, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.

See upcoming clock changes worldwide.

BST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for BST
  • A - short form of 'Alpha'
IANA/Olson: Reflects BST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Europe/Belfast
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
BST Abbreviation: Several time zones share BST abbreviation and it could refer to these time zones
  • British Summer Time - UTC +1
  • Bangladesh Standard Time - UTC +6
  • Bougainville Standard Time - UTC +11
Time zones with the GMT +1 offset:
  • BST - British Summer Time
  • CET - Central European Time
  • IST - Irish Standard Time
  • WEST - Western European Summer Time
  • A - Alpha Time Zone
  • CET - Central European Time
  • MEZ - Mitteleuropäische Zeit
  • WAT - West Africa Time
  • WST - Western Sahara Summer Time
  • BMT - Biel Mean Time

Eastern Daylight Time

Offset: EDT is 4 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bahamas, Canada, Haiti, Turks & Caicos Is, United States

Principal Cities: The largest city in the EDT 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: HAE - Heure Avancée de l'Est

Spanish: EDT - Tiempo de verano del Este, ET - Zona Sureste

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

On October 6, 2020 all shaded areas are on EDT.

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

123456789101112Start: Eastern Daylight Time (EDT) started on Sunday, March 8, 2020 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2020, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Eastern Daylight Time (EDT) ends on Sunday, November 1, 2020 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2020, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

EDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -04 - basic short
  • -0400 - basic
  • -04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Quebec - Military abbreviation for EDT
  • Q - short form of 'Quebec'
IANA/Olson: Reflects EDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • 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/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST5EDT
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
Time zones with the GMT -4 offset:
  • AST - Atlantic Standard Time
  • EDT - Eastern Daylight Time
  • AMT - Amazon Time
  • BOT - Bolivia Time
  • CDT - Cuba Daylight Time
  • CLT - Chile Standard Time
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time

Central Daylight Time

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

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

Principal Cities: The largest city in the CDT time zone is Chicago in the United States, with about 2.664 million people. Other major cities in this time zone include Houston, San Antonio, Dallas, Fort Worth.

French: HAC - Heure Avancée du Centre

Spanish: CT - Zona Centro

Map of the areas on Central Daylight Time (CDT)
CDT part of the year

On October 6, 2020 some of the shaded areas are on UTC−6 (MDT).

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

123456789101112Start: Central Daylight Time (CDT) started on Sunday, March 8, 2020 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2020, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Central Daylight Time (CDT) ends on Sunday, November 1, 2020 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2020, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

CDT 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 CDT
  • R - short form of 'Romeo'
IANA/Olson: Reflects CDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Chicago
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • America/Matamoros
  • America/Menominee
  • America/North_Dakota/Beulah
  • America/North_Dakota/Center
  • America/North_Dakota/New_Salem
  • America/Ojinaga
  • America/Rainy_River
  • America/Rankin_Inlet
  • America/Resolute
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • US/Central
  • US/Indiana-Starke
CDT Abbreviation: Several time zones share CDT abbreviation and it could refer to these time zones
  • Central Daylight Time - UTC -5
  • Cuba Daylight Time - UTC -4
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

Mountain Daylight Time

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

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

Principal Cities: The largest city in the MDT time zone is Ciudad Juárez in Mexico, with about 1.512 million people. Other major cities in this time zone include Calgary, Edmonton, Denver, El Paso.

French: HAR - Heure Avancée des Rocheuses

Spanish: MT - Zona Pacífico

Map of the areas on Mountain Daylight Time (MDT)
MDT part of the year

On October 6, 2020 all shaded areas are on MDT.

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

123456789101112Start: Mountain Daylight Time (MDT) started on Sunday, March 8, 2020 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2020, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Mountain Daylight Time (MDT) ends on Sunday, November 1, 2020 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2020, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

MDT 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 MDT
  • S - short form of 'Sierra'
IANA/Olson: Reflects MDT 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/Denver
  • America/Edmonton
  • America/Inuvik
  • America/Shiprock
  • America/Yellowknife
  • Canada/Mountain
  • MST7MDT
  • Navajo
  • US/Mountain
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

Pacific Daylight Time

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

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

Principal Cities: The largest city in the PDT 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: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

Map of the areas on Pacific Daylight Time (PDT)
PDT part of the year

On October 6, 2020 all shaded areas are on PDT.

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

123456789101112Start: Pacific Daylight Time (PDT) started on Sunday, March 8, 2020 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2020, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Pacific Daylight Time (PDT) ends on Sunday, November 1, 2020 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2020, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

PDT 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 PDT
  • T - short form of 'Tango'
IANA/Olson: Reflects PDT 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
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone