Time in Oulu vs Istanbul

Oulu keeps EEST (UTC+3) and Istanbul keeps UTC+3 (UTC+3) today. Istanbul is the same time as Oulu; the rows below read both clocks live.

The working day, side by side

Hours shaded in both rows are inside working hours in both cities: 09:00–18:00 in Istanbul (09:00–18:00 your time).

Oulu and Istanbul hour by hour, with the working-hour overlap shaded
City	00:00 in Oulu	01:00 in Oulu	02:00 in Oulu	03:00 in Oulu	04:00 in Oulu	05:00 in Oulu	06:00 in Oulu	07:00 in Oulu	08:00 in Oulu	09:00 in Oulu	10:00 in Oulu	11:00 in Oulu	12:00 in Oulu	13:00 in Oulu	14:00 in Oulu	15:00 in Oulu	16:00 in Oulu	17:00 in Oulu	18:00 in Oulu	19:00 in Oulu	20:00 in Oulu	21:00 in Oulu	22:00 in Oulu	23:00 in Oulu
Oulu——	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Istanbul——	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Working hours
Shoulder
Night
Overlap

Do more with Oulu and Istanbul

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Oulu, Istanbul and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

09:00 in Oulu

Inside working hours on both sides

09:00 in Istanbul

10:00 in Oulu

Inside working hours on both sides

10:00 in Istanbul

11:00 in Oulu

Inside working hours on both sides

11:00 in Istanbul

12:00 in Oulu

Inside working hours on both sides

12:00 in Istanbul

Where daylight saving pulls them apart

Oulu next changes on Sunday 25 October 2026. Between those two dates the gap between the cities is an hour different from the one shown above — which is exactly when a recurring meeting drifts. Every date we track is on the daylight saving page.

Also useful

Common questions

How many hours ahead is Istanbul of Oulu?

Istanbul and Oulu read the same clock right now.

What is the best time to call between Oulu and Istanbul?

Any hour in 09:00–18:00 Oulu time is inside working hours in both cities.

Do Oulu and Istanbul change clocks on the same date?

Only one of them does, so the gap between them changes twice a year even though neither city moved relative to the sun.