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AZOST
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EDT
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Quick answers

Selected conversion

12:00 pm12:00 AZOST (UTC+0), Oct 12, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 12, 2026

AZOST is 4 hours ahead of EDT.

AZOST and EDT examples

These examples always use AZOST (UTC+0) and EDT (UTC-4). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

AZOST is 4 hours ahead of EDT.

How the time difference changes

For most of the year, AZOST is 4 hours ahead of EDT. From Oct 25 to Nov 1, 2026, and from Mar 14 to Mar 28, 2027, AZOT is 3 hours ahead of EDT. From Nov 1, 2026 to Mar 14, 2027, AZOT is 4 hours ahead of EST.

For most of the year, working hours of 9:00 am to 5:00 pm in AZOST correspond to 5:00 am to 1:00 pm in EDT. At other times of the year, working hours of 9:00 am to 5:00 pm in AZOT correspond to 5:00 am to 1:00 pm in EST or working hours of 9:00 am to 5:00 pm in AZOT correspond to 6:00 am to 2:00 pm in EDT.For most of the year, working hours of 09:00 to 17:00 in AZOST correspond to 05:00 to 13:00 in EDT. At other times of the year, working hours of 09:00 to 17:00 in AZOT correspond to 05:00 to 13:00 in EST or working hours of 09:00 to 17:00 in AZOT correspond to 06:00 to 14:00 in EDT.

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

Time Difference

Azores Summer Time is 4 hours ahead of Eastern Daylight Time.
12:00 pm12:00 in AZOST is 8:00 am08:00 in EDT

AZOST to EDT call time
Best time for a conference call or a meeting is between 1pm-5pm13:00-17:00 in AZOST which corresponds to 9am-1pm09:00-13:00 in EDT

12:00 pm12:00 Azores Summer Time (AZOST). Offset UTC 0:00 hours
8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours

12:00 pm12:00 AZOST / 8:00 am08:00 EDT

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Hourly time comparison
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Azores Summer Time

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

Countries using this time zone: Portugal

Principal Cities: The largest city in the AZOST time zone is Ponta Delgada in Portugal, with about 20,056 people. Other major cities in this time zone include Lagoa, Angra do Heroísmo, Rabo de Peixe, Horta.

Map of the areas on Azores Summer Time (AZOST)
AZOST part of the year

Today all shaded areas are on AZOST.

Daylight Saving: Azores Summer Time (AZOST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Azores Time (AZOT).

123456789101112Start: Azores Summer Time (AZOST) started on Sunday, March 29, 2026 at 12:00 am00:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 1:00 am01:00. Daylight saving starts annually on the last Sunday of March.

123456789101112End: Azores Summer Time (AZOST) ends on Sunday, October 25, 2026 at 1:00 am01:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 12:00 am00:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.

See upcoming clock changes worldwide.

AZOST 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 AZOST
  • Z - short form of 'Zulu'
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

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

Today 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, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Eastern Daylight Time (EDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are 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.

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