Offset
The time difference between Eastern European Time and Atlantic Time is 6 hours.
Eastern European Time (EEST) is ahead of Atlantic Time (ADT).
EEST: UTC+3
ADT: UTC-3
Both zones are currently observing daylight saving time.
When to schedule
Business-hours overlap: 3 PM–5 PM in Eastern European Time (9 AM–11 AM in Atlantic Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Eastern European Time (10:00 AM Atlantic Time).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Finland
- New Year's DayThu, Jan 1
- EpiphanyTue, Jan 6
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- Easter MondayMon, Apr 6
- May DayFri, May 1
- Ascension DayThu, May 14
- PentecostSun, May 24
- Midsummer EveFri, Jun 19
- Midsummer DaySat, Jun 20
- All Saints' DaySat, Oct 31
- Independence DaySun, Dec 6
- Christmas EveThu, Dec 24
- Christmas DayFri, Dec 25
- St. Stephen's DaySat, Dec 26
Canada
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Victoria DayMon, May 18
- Canada DayWed, Jul 1
- Labour DayMon, Sep 7
- National Day for Truth and ReconciliationWed, Sep 30
- ThanksgivingMon, Oct 12
- Christmas DayFri, Dec 25
About these zones
Eastern European Time is also known as EET, or EEST. To call Finland, dial +358.
Atlantic Time is also known as AST, or ADT. To call Canada, dial +1.
Atlantic Time is approximately 3,600 miles northwest of Eastern European Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| EET | AST-ATLANTIC | Day |
|---|---|---|
| 12:00 am | 6:00 pm | -1 day |
| 1:00 am | 7:00 pm | -1 day |
| 2:00 am | 8:00 pm | -1 day |
| 3:00 am | 9:00 pm | -1 day |
| 4:00 am | 10:00 pm | -1 day |
| 5:00 am | 11:00 pm | -1 day |
| 6:00 am | 12:00 am | Same day |
| 7:00 am | 1:00 am | Same day |
| 8:00 am | 2:00 am | Same day |
| 9:00 am | 3:00 am | Same day |
| 10:00 am | 4:00 am | Same day |
| 11:00 am | 5:00 am | Same day |
| 12:00 pm | 6:00 am | Same day |
| 1:00 pm | 7:00 am | Same day |
| 2:00 pm | 8:00 am | Same day |
| 3:00 pm | 9:00 am | Same day |
| 4:00 pm | 10:00 am | Same day |
| 5:00 pm | 11:00 am | Same day |
| 6:00 pm | 12:00 pm | Same day |
| 7:00 pm | 1:00 pm | Same day |
| 8:00 pm | 2:00 pm | Same day |
| 9:00 pm | 3:00 pm | Same day |
| 10:00 pm | 4:00 pm | Same day |
| 11:00 pm | 5:00 pm | Same day |
Daylight saving time
Both zones observe daylight saving time, but they transition on different dates.
Eastern European Time: next transition on Sunday, October 25, 2026.
Atlantic Time: next transition on Sunday, November 1, 2026.
For approximately 7 days between transitions, the offset between Eastern European Time and Atlantic Time differs from its typical value. Recurring meetings during this window will shift by one hour.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:04 AM
- Sunset
- 10:36 PM
- Day length
- 18h 32m
- Sunrise
- 5:31 AM
- Sunset
- 8:56 PM
- Day length
- 15h 25m
Daylight overlap: 11h 4m — 11:31 AM–10:36 PM in Eastern European Time (5:31 AM–4:36 PM in Atlantic Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Eastern European Time
Cities in Atlantic Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Eastern European Time
- HEL
Airports in Atlantic Time
- YHZ
Related conversions
Common conversions
- What is 9:00 am EET in AST-ATLANTIC?
- 9:00 am EET is 3:00 am AST-ATLANTIC.
- What is 12:00 pm EET in AST-ATLANTIC?
- 12:00 pm EET is 6:00 am AST-ATLANTIC.
- What is 12:30 pm EET in AST-ATLANTIC?
- 12:30 pm EET is 6:30 am AST-ATLANTIC.
- What is 2:00 pm EET in AST-ATLANTIC?
- 2:00 pm EET is 8:00 am AST-ATLANTIC.
- What is 5:00 pm EET in AST-ATLANTIC?
- 5:00 pm EET is 11:00 am AST-ATLANTIC.
- What is 11:30 pm EET in AST-ATLANTIC?
- 11:30 pm EET is 5:30 pm AST-ATLANTIC.