MSK to AST Converter
Time Difference
Moscow Standard Time is 6 hours ahead of Atlantic Daylight Time
4:30 pm16:30 in MSK is 10:30 am10:30 in ADT
MSK to AST call time
Best time for a conference call or a meeting is between 3pm-6pm in MSK which corresponds to 8am-11am in AST
4:30 pm16:30 Moscow Standard Time (MSK). Offset UTC +3:00 hours
10:30 am10:30 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
4:30 pm16:30 MSK / 10:30 am10:30 ADT
MSK | ADT |
---|---|
12am (midnight) | 6pm |
1am | 7pm |
2am | 8pm |
3am | 9pm |
4am | 10pm |
5am | 11pm |
6am | 12am (midnight) |
7am | 1am |
8am | 2am |
9am | 3am |
10am | 4am |
11am | 5am |
12pm (noon) | 6am |
1pm | 7am |
2pm | 8am |
3pm | 9am |
4pm | 10am |
5pm | 11am |
6pm | 12pm (noon) |
7pm | 1pm |
8pm | 2pm |
9pm | 3pm |
10pm | 4pm |
11pm | 5pm |
0:00 | 18:00 |
1:00 | 19:00 |
2:00 | 20:00 |
3:00 | 21:00 |
4:00 | 22:00 |
5:00 | 23:00 |
6:00 | 0:00 |
7:00 | 1:00 |
8:00 | 2:00 |
9:00 | 3:00 |
10:00 | 4:00 |
11:00 | 5:00 |
12:00 | 6:00 |
13:00 | 7:00 |
14:00 | 8:00 |
15:00 | 9:00 |
16:00 | 10:00 |
17:00 | 11:00 |
18:00 | 12:00 |
19:00 | 13:00 |
20:00 | 14:00 |
21:00 | 15:00 |
22:00 | 16:00 |
23:00 | 17:00 |
Moscow Standard Time
Offset: MSK is 3 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Russia, Ukraine
Principal Cities: The largest city in the MSK timezone is Moscow from Russia with population about 10.381 million people. Other major cities in the area are Saint Petersburg, Nizhniy Novgorod, Kazan, Rostov na Donu
Daylight Saving: Moscow Standard Time (MSK) is not adjusted for daylight saving therefore MSK remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Moscow Standard Time remains the same

MSK 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 three hour and zero minutes time differences to the east of the zero meridian.
- Charlie - Military abbreviation for MSK
- C - short form of 'Charlie'
- Europe/Kirov
- Europe/Moscow
- Europe/Simferopol
- Europe/Volgograd
- W-SU
- 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
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 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 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 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 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
- Azerbaijan Standard Time - UTC +4
- Argentina Standard Time - UTC -3
- Azores Summer Time - UTC +0
- 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