EST to AMST Converter

Updating current time…
EDT/EST
Eastern Daylight Time
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Eastern Time is on daylight saving time: EDT (UTC−4) until Sun, Nov 1.
Use EST all year (UTC−5)
AMT/AMST
Amazon Time
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AMST is not used on this date.

This converter uses AMT (UTC−4), as in Cuiaba.

Keep AMST (UTC−3)

Quick answers

Selected conversion

8:00 am08:00 EDT (UTC-4), Oct 12, 2026 = 8:00 am08:00 AMT (UTC-4), Oct 12, 2026

EDT and AMT have the same local time.

EST (US winter time, UTC-5) and AMST examples

These examples always use EST (UTC-5) and AMST (UTC-3). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

EST is 2 hours behind AMST.

EST is US Eastern winter time (early November to mid-March). The rest of the year New York uses EDT (UTC-4), one hour later. For Eastern Time that follows daylight saving time, use ET to AMST. For daylight-time examples, use EDT to AMT.

How the time difference changes

For most of the year, EDT and AMT have the same time. From Nov 1, 2026 to Mar 14, 2027, EST is 1 hour behind AMT.

For most of the year, working hours of 9:00 am to 5:00 pm in EDT correspond to 9:00 am to 5:00 pm in AMT. At other times of the year, working hours of 9:00 am to 5:00 pm in EST correspond to 10:00 am to 6:00 pm in AMT.For most of the year, working hours of 09:00 to 17:00 in EDT correspond to 09:00 to 17:00 in AMT. At other times of the year, working hours of 09:00 to 17:00 in EST correspond to 10:00 to 18:00 in AMT.

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

Time Difference

Eastern Daylight Time and Amazon Time have the same local time.
8:00 am08:00 in EDT is 8:00 am08:00 in AMT

EDT to AMT call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in EDT which corresponds to 9am-5pm09:00-17:00 in AMT

8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
8:00 am08:00 Amazon Time (AMT). Offset UTC -4:00 hours

8:00 am08:00 EDT / 8:00 am08:00 AMT

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
EDTAMT
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Eastern Standard Time

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

Countries using this time zone: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, 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 the lighter areas are on UTC−4 (EDT).

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).

123456789101112End: Eastern Standard Time (EST) ended 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 local daylight time instead. Standard time ends annually on the second Sunday of March.

123456789101112Start: Eastern Standard Time (EST) starts 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. Standard time starts annually on the first Sunday of November.

See 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

Amazon Summer Time

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

AMST 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 AMST
  • P - short form of 'Papa'
AMST Abbreviation: Several time zones share AMST abbreviation and it could refer to these time zones
  • Armenia Summer Time - UTC +5
  • Amazon Summer Time - UTC -3
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 - Brasília time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • SRT - Suriname Time
  • UYT - Uruguay Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT