AST to Tehran, Iran
Time Difference
Atlantic Daylight Time is 7 hours and 30 minutes behind IDT (Iran Daylight Time)
12:30 pm12:30 in ADT is 8:00 pm20:00 in Tehran, Iran
AST to Tehran call time
Best time for a conference call or a meeting is between 8am-10am in AST which corresponds to 4:30pm-6:30pm in Tehran
12:30 pm12:30 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
8:00 pm20:00 IDT (Iran Daylight Time) (Tehran, Iran). Offset UTC +4:30 hours
12:30 pm12:30 ADT / 8:00 pm20:00 Tehran, Iran
| ADT | Tehran, Iran |
|---|---|
| 12am (midnight) | 7:30 am |
| 1am | 8:30 am |
| 2am | 9:30 am |
| 3am | 10:30 am |
| 4am | 11:30 am |
| 5am | 12:30 pm |
| 6am | 1:30 pm |
| 7am | 2:30 pm |
| 8am | 3:30 pm |
| 9am | 4:30 pm |
| 10am | 5:30 pm |
| 11am | 6:30 pm |
| 12pm (noon) | 7:30 pm |
| 1pm | 8:30 pm |
| 2pm | 9:30 pm |
| 3pm | 10:30 pm |
| 4pm | 11:30 pm |
| 5pm | 12:30 am |
| 6pm | 1:30 am |
| 7pm | 2:30 am |
| 8pm | 3:30 am |
| 9pm | 4:30 am |
| 10pm | 5:30 am |
| 11pm | 6:30 am |
| 0:00 | 7:30 |
| 1:00 | 8:30 |
| 2:00 | 9:30 |
| 3:00 | 10:30 |
| 4:00 | 11:30 |
| 5:00 | 12:30 |
| 6:00 | 13:30 |
| 7:00 | 14:30 |
| 8:00 | 15:30 |
| 9:00 | 16:30 |
| 10:00 | 17:30 |
| 11:00 | 18:30 |
| 12:00 | 19:30 |
| 13:00 | 20:30 |
| 14:00 | 21:30 |
| 15:00 | 22:30 |
| 16:00 | 23:30 |
| 17:00 | 0:30 |
| 18:00 | 1:30 |
| 19:00 | 2:30 |
| 20:00 | 3:30 |
| 21:00 | 4:30 |
| 22:00 | 5:30 |
| 23:00 | 6:30 |
Atlantic Standard Time
Offset: AST is 4 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: 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 timezone is Santo Domingo from Dominican Republic with population about 2.202 million people. Other major cities in the area are Santiago de los Caballeros, Santo Domingo Oeste, San Juan, Halifax
French: HNA - Heure Normale de l'Atlantique
Spanish: AST - Tiempo Estándar del Atlántico
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Atlantic Daylight Time (ADT).
End: Atlantic Standard Time (AST) has ended on Sunday, March 10, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 10, 2024, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Atlantic Standard Time (AST) starts on Sunday, November 3, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, November 3, 2024, 1:00 am. Standard time starts annually the on 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 four hour and zero minutes time differences 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
- Arabian Standard Time - UTC +3
- Acre Standard Time - UTC -5
- Azores Standard Time - UTC -1
- Apia Standard Time - UTC +13
- 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
Tehran Information
Time Zone
IRDT - Iran Daylight Time
+4:30 hours during Iran Daylight Time.