AST to EEST Converter
Atlantic Time is on daylight saving time: ADT (UTC−3) until Sun, Nov 1.
Quick answers
Selected conversion
9:00 am09:00 ADT (UTC-3), Oct 4, 2026 = 3:00 pm15:00 EEST (UTC+3), Oct 4, 2026
ADT is 6 hours behind EEST.
AST and EEST examples
These examples always use AST (UTC-4) and EEST (UTC+3). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
AST is 7 hours behind EEST.
How the time difference changes
For most of the year, ADT is 6 hours behind EEST. At other times of the year, AST is 6 hours behind EET or ADT is 5 hours behind EET.
For most of the year, working hours of 9:00 am to 5:00 pm in ADT correspond to 3:00 pm to 11:00 pm in EEST. At other times of the year, working hours of 9:00 am to 5:00 pm in AST correspond to 3:00 pm to 11:00 pm in EET or working hours of 9:00 am to 5:00 pm in ADT correspond to 2:00 pm to 10:00 pm in EET.For most of the year, working hours of 09:00 to 17:00 in ADT correspond to 15:00 to 23:00 in EEST. At other times of the year, working hours of 09:00 to 17:00 in AST correspond to 15:00 to 23:00 in EET or working hours of 09:00 to 17:00 in ADT correspond to 14:00 to 22:00 in EET.
Compare AST time with EEST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Atlantic Daylight Time is 6 hours behind Eastern European Summer Time.
9:00 am09:00 in ADT is 3:00 pm15:00 in EEST
ADT to EEST call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in ADT which corresponds to 3pm-5pm15:00-17:00 in EEST
9:00 am09:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
3:00 pm15:00 Eastern European Summer Time (EEST). Offset UTC +3:00 hours
9:00 am09:00 ADT / 3:00 pm15:00 EEST
| ADT | EEST |
|---|---|
| 12:00am | 6:00am |
| 1:00am | 7:00am |
| 2:00am | 8:00am |
| 3:00am | 9:00am |
| 4:00am | 10:00am |
| 5:00am | 11:00am |
| 6:00am | 12:00pm |
| 7:00am | 1:00pm |
| 8:00am | 2:00pm |
| 9:00am | 3:00pm |
| 10:00am | 4:00pm |
| 11:00am | 5:00pm |
| 12:00pm | 6:00pm |
| 1:00pm | 7:00pm |
| 2:00pm | 8:00pm |
| 3:00pm | 9:00pm |
| 4:00pm | 10:00pm |
| 5:00pm | 11:00pm |
| 6:00pm | 12:00am |
| 7:00pm | 1:00am |
| 8:00pm | 2:00am |
| 9:00pm | 3:00am |
| 10:00pm | 4:00am |
| 11:00pm | 5:00am |
| 00:00 | 06:00 |
| 01:00 | 07:00 |
| 02:00 | 08:00 |
| 03:00 | 09:00 |
| 04:00 | 10:00 |
| 05:00 | 11:00 |
| 06:00 | 12:00 |
| 07:00 | 13:00 |
| 08:00 | 14:00 |
| 09:00 | 15:00 |
| 10:00 | 16:00 |
| 11:00 | 17:00 |
| 12:00 | 18:00 |
| 13:00 | 19:00 |
| 14:00 | 20:00 |
| 15:00 | 21:00 |
| 16:00 | 22:00 |
| 17:00 | 23:00 |
| 18:00 | 00:00 |
| 19:00 | 01:00 |
| 20:00 | 02:00 |
| 21:00 | 03:00 |
| 22:00 | 04:00 |
| 23:00 | 05:00 |
Atlantic Standard Time
Offset: AST is 4 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries using this time zone: Antigua & Barbuda, Anguilla, Aruba, Barbados, St Barthelemy, Bermuda, Caribbean NL, Canada, Curaçao, Dominica, Dominican Republic, Grenada, Greenland, Guadeloupe, St Kitts & Nevis, St Lucia, St Martin (French), Martinique, Montserrat, Puerto Rico, St Maarten (Dutch), Trinidad & Tobago, St Vincent, Virgin Islands (UK), Virgin Islands (US)
Principal Cities: The largest city in the AST time zone is Santo Domingo in Dominican Republic, with about 2.202 million people. Other major cities in this time zone include Santiago de los Caballeros, Santo Domingo Oeste, Halifax, San Juan.
French: HNA - Heure Normale de l'Atlantique
Spanish: AST - Tiempo Estándar del Atlántico
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Atlantic Daylight Time (ADT).
End: Atlantic Standard Time (AST) 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.
Start: Atlantic Standard Time (AST) 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.
AST representations, usage and related time zones
- -04 - basic short
- -0400 - basic
- -04:00 - extended
- -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.
- Quebec - Military abbreviation for AST
- Q - short form of 'Quebec'
- America/Anguilla
- America/Antigua
- America/Aruba
- America/Barbados
- America/Blanc-Sablon
- America/Curacao
- America/Dominica
- America/Glace_Bay
- America/Goose_Bay
- America/Grenada
- America/Guadeloupe
- America/Halifax
- America/Kralendijk
- America/Lower_Princes
- America/Marigot
- America/Martinique
- America/Moncton
- America/Montserrat
- America/Port_of_Spain
- America/Puerto_Rico
- America/Santo_Domingo
- America/St_Barthelemy
- America/St_Kitts
- America/St_Lucia
- America/St_Thomas
- America/St_Vincent
- America/Thule
- America/Tortola
- America/Virgin
- Atlantic/Bermuda
- Canada/Atlantic
- Atlantic Standard Time - UTC -4
- Arabia Standard Time - UTC +3
- 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
Eastern European Summer Time
Offset: EEST is 3 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries using this time zone: Åland Islands, Bulgaria, Cyprus, Estonia, Egypt, Finland, Greece, Lebanon, Lithuania, Latvia, Moldova, Palestine, Romania, Ukraine
Principal Cities: The largest city in the EEST time zone is Cairo in Egypt, with about 9.607 million people. Other major cities in this time zone include Alexandria, Kiev, Al Jizah, Beirut.
German: OESZ - Osteuropäische Sommerzeit
Daylight Saving: Eastern European Summer Time (EEST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Eastern European Time (EET).
Start: Eastern European Summer Time (EEST) started on Sunday, March 29, 2026 at 3:00 am03:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 4:00 am04:00. Daylight saving starts annually on the last Sunday of March.
End: Eastern European Summer Time (EEST) ends on Sunday, October 25, 2026 at 4:00 am04:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 3:00 am03:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.
EEST representations, usage and related time zones
- +03 - basic short
- +0300 - basic
- +03:00 - extended
- +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 east of the zero meridian.
- Charlie - Military abbreviation for EEST
- C - short form of 'Charlie'
- Africa/Cairo
- Asia/Beirut
- Asia/Famagusta
- Asia/Gaza
- Asia/Hebron
- Asia/Nicosia
- EET
- Egypt
- Europe/Athens
- Europe/Bucharest
- Europe/Chisinau
- Europe/Helsinki
- Europe/Kiev
- Europe/Kyiv
- Europe/Mariehamn
- Europe/Nicosia
- Europe/Riga
- Europe/Sofia
- Europe/Tallinn
- Europe/Tiraspol
- Europe/Uzhgorod
- Europe/Vilnius
- Europe/Zaporozhye
- EEST - Eastern European Summer Time
- MSK - Moscow Standard Time
- AST - Arabia Standard Time
- C - Charlie Time Zone
- EAT - Eastern Africa Time
- FET - Further Eastern European Time
- IDT - Israel Daylight Time
- TRT - Turkey Time