Athens and Istanbul working-hours overlap
On Monday, 28 September 2026, Athens and Istanbul are on the same clock (UTC+03:00), though they do not stay that way all year. Their working hours overlap for 8 hours that day, between 06:00–14:00 UTC — 09:00–17:00 in Athens and 09:00–17:00 in Istanbul. Athens changes clocks on Sunday, 25 October 2026, and the gap between them goes from nothing at all to 1 hour. Istanbul does not change clocks at all.
Every figure on this page describes Monday, 28 September 2026 — a fixed day, not the day you are reading it. Working hours are 09:00–17:00 local time for both cities; change either, or pick another date, in the overlap calculator.
Shared working hours
Everyone is at work between 06:00–14:00 UTC — 8 hours.
| City | Local time | Offset |
|---|---|---|
| Athens | 09:00–17:00 | UTC+03:00 |
| Istanbul | 09:00–17:00 | UTC+03:00 |
Each city's working day
| City | Local hours | In UTC | Offset | Next clock change |
|---|---|---|---|---|
| Athens | 09:00–17:00 | 06:00–14:00 UTC | UTC+03:00 | UTC+03:00 → UTC+02:00, 25 Oct 2026 |
| Istanbul | 09:00–17:00 | 06:00–14:00 UTC | UTC+03:00 | No daylight saving |
How the shared window moves through the year
Athens changes clocks on Sunday, 25 October 2026, and Istanbul never does, so the gap between them moves only when Athens's clocks do. Each row is the same pair of working days, sampled once a month, so the window's size and position follow the clock changes described above.
| Month | Shared window | Length |
|---|---|---|
| 2026-10 | 06:00–14:00 UTC | 8 hours |
| 2026-11 | 07:00–14:00 UTC | 7 hours |
| 2026-12 | 07:00–14:00 UTC | 7 hours |
| 2027-01 | 07:00–14:00 UTC | 7 hours |
| 2027-02 | 07:00–14:00 UTC | 7 hours |
| 2027-03 | 07:00–14:00 UTC | 7 hours |
| 2027-04 | 06:00–14:00 UTC | 8 hours |
| 2027-05 | 06:00–14:00 UTC | 8 hours |
| 2027-06 | 06:00–14:00 UTC | 8 hours |
| 2027-07 | 06:00–14:00 UTC | 8 hours |
| 2027-08 | 06:00–14:00 UTC | 8 hours |
| 2027-09 | 06:00–14:00 UTC | 8 hours |
Questions
- What time can Athens and Istanbul meet?
- 06:00–14:00 UTC on Monday, 28 September 2026 — 8 hours. In Athens that is 09:00–17:00, and in Istanbul it is 09:00–17:00.
- How far apart are Athens and Istanbul?
- On Monday, 28 September 2026, Athens and Istanbul keep the same clock, both at UTC+03:00. Athens changes clocks on Sunday, 25 October 2026, and the gap between them goes from nothing at all to 1 hour. Istanbul does not change clocks at all.
- Does the overlap between Athens and Istanbul change through the year?
- Athens changes clocks on Sunday, 25 October 2026, and Istanbul never does, so the gap between them moves only when Athens's clocks do. Sampled once a month across the twelve months from Monday, 28 September 2026 the window is 06:00–14:00 UTC, 07:00–14:00 UTC.
Related city pairs
- Honolulu and Athens
- Honolulu and Istanbul
- San Francisco and Athens
- San Francisco and Istanbul
- Denver and Athens
- Denver and Istanbul
Or read how overlap is calculated and the other questions people ask about scheduling across time zones.