EEST to AST
-7hEEST
EESTSOURCEAST
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
EEST and AST on the World Map
The map below highlights the EEST (Eastern European Summer Time) and AST (Atlantic Standard Time) timezone regions across the globe.
EEST – Eastern European Summer Time
UTC+03:00Eastern European Summer Time (EEST, UTC+03:00) is the daylight saving period across eastern Europe, from late March to late October.
- •EEST runs from the last Sunday in March to the last Sunday in October.
- •EEST is one hour ahead of Eastern European Time (EET, UTC+02:00).
- •During EEST, eastern Europe is level with Moscow, Istanbul and Riyadh.
- •EEST follows the EU-wide summer time schedule.
AST – Atlantic Standard Time
UTC-04:00Atlantic Standard Time (AST) is the time zone for the Canadian Atlantic provinces and the Caribbean, 4 hours behind UTC.
- •Puerto Rico uses AST year-round and does not observe DST.
- •AST is 1 hour ahead of EST.
- •Halifax, the capital of Nova Scotia, is the largest city in AST Canada.
Comparing Time Zones: EEST and AST
EEST runs on Eastern European Summer Time (EEST) at UTC+03:00. AST runs on Atlantic Standard Time (AST) at UTC-04:00. That puts EEST 7 hours behind AST — a difference of -7h at the current offsets.
In practice, when it is 9:00 AM in EEST it is 2:00 AM in AST. Midnight in EEST is 5:00 PM in AST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
EEST to AST time conversion table
| EEST (EEST) | AST (AST) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | previous day |
| 6:00 AM | 11:00 PM | previous day |
| 7:00 AM | 12:00 AM | same day |
| 8:00 AM | 1:00 AM | same day |
| 9:00 AM | 2:00 AM | same day |
| 12:00 PM | 5:00 AM | same day |
| 3:00 PM | 8:00 AM | same day |
| 5:00 PM | 10:00 AM | same day |
| 6:00 PM | 11:00 AM | same day |
| 9:00 PM | 2:00 PM | same day |
Why people convert EEST to AST time
- Scheduling a call from EEST to AST: a 10:00 AM start in EEST lands at 3:00 AM in AST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both EEST and AST are inside the 9-to-5 working day between 4:00 PM and 5:00 PM EEST time (9:00 AM–10:00 AM AST). That is roughly 1 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in EEST is 1:00 PM in AST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM EEST" is unambiguous; "3 PM" across a -7h gap is not.
- Block 4:00 PM–5:00 PM EEST as the recurring meeting window if you work primarily from EEST and need AST colleagues present.
About EEST (Eastern European Summer Time)
Eastern European Summer Time (EEST) is the daylight saving period used across eastern Europe, when clocks move one hour forward from Eastern European Time (EET, UTC+02:00) to UTC+03:00. It runs from the last Sunday in March to the last Sunday in October, in step with the rest of the European Union. EEST covers Greece, Finland, Romania, Bulgaria, the Baltic states, Ukraine and Moldova, and matches the offset used year-round by Moscow, Istanbul and Riyadh during those months. Athens and Helsinki both sit near the western edge of the EEST band, so summer evenings stay light well past 21:00.
About AST (Atlantic Standard Time)
Atlantic Standard Time (AST) covers Canada's Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and most of Labrador), as well as several Caribbean nations. Puerto Rico and the US Virgin Islands use AST year-round without daylight saving time. The Canadian provinces switch to Atlantic Daylight Time (ADT) in summer.
Best time to call between EEST and AST
Both EEST and AST sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM EEST, which is 9:00 AM–10:00 AM AST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
EEST and AST overlap for only 60 minutes (4:00 PM–5:00 PM EEST), so meetings have to be booked precisely.
EEST is 7 hours behind AST (EEST UTC+03:00 → AST UTC-04:00). The shared working window is 4:00 PM–5:00 PM EEST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
EEST
☀ Currently in DST
Standard: UTC+02:00 · DST: UTC+03:00
Clocks fall back on Sun, Oct 25, 2026
AST
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between EEST and AST?
EEST (EEST, UTC+03:00) is 7 hours behind AST (AST, UTC-04:00). The gap is currently -7h.
How do I convert EEST time to AST time?
Add -7h to EEST local time. For example, 9:00 AM in EEST is 2:00 AM in AST.
What time is it in AST right now?
AST uses AST at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from EEST.
What is the best time to call AST from EEST?
Call between 4:00 PM and 5:00 PM EEST — that maps to 9:00 AM–10:00 AM AST and keeps both parties inside the working day.
Which is behind, EEST or AST?
EEST is 7 hours behind AST. When it is 12:00 PM in EEST it is 5:00 AM in AST.
Does daylight saving time affect the EEST–AST difference?
Neither zone observes daylight saving time, so the -7h offset between EEST and AST is fixed all year.
Which other cities share EEST's time zone?
EEST also covers Athens, Helsinki, Bucharest, Sofia, Kyiv, Riga.
Which countries use EEST, EEST's zone?
EEST is used in Greece, Finland, Romania, Bulgaria, Estonia, Latvia, Lithuania, Ukraine and 2 more.
Is there a day difference between EEST and AST?
Not normally. The -7h gap only pushes the date over the previous day.
What is the time difference between EEST and AST?
AST is -7h from EEST.
What timezone is EEST in?
EEST operates on its local timezone.
What timezone is AST in?
AST operates on its local timezone.
Which countries use EEST (Eastern European Summer Time)?
EEST is used in Greece, Finland, Romania, Bulgaria, Estonia, Latvia, and 4 more countries.
Does EEST observe daylight saving time?
Yes, EEST switches to EEST during summer months.
What are some interesting facts about EEST?
EEST runs from the last Sunday in March to the last Sunday in October. EEST is one hour ahead of Eastern European Time (EET, UTC+02:00).
Which cities are in the AST timezone?
Major cities in the AST timezone include Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
What is the UTC offset for AST?
Atlantic Standard Time (AST) is at UTC-04:00. During daylight saving time, it shifts to ADT.
What should I know about the AST timezone?
Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.
When is it midnight in EEST, what time is it in AST?
When it is 12:00 AM (midnight) in EEST (EEST), it is -7h later in AST (AST).
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