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Global ClockTime zone converter & meeting planner
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Working hours
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09
End
18
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AUTO follows the operating system. Working hours drive the green banding on every grid. All four persist on this device only.

Time in San Jose vs Istanbul

San Jose keeps PDT (UTC−7) and Istanbul keeps UTC+3 (UTC+3) today. Istanbul is 10 hours ahead of San Jose; the rows below read both clocks live.

The working day, side by side

The working days do not meet. there is no working-hour overlap with Istanbul — the nearest workable window is 07:00–08:00 your time (17:00 there).

San Jose and Istanbul hour by hour, with the working-hour overlap shaded
City00:00 in San Jose01:00 in San Jose02:00 in San Jose03:00 in San Jose04:00 in San Jose05:00 in San Jose06:00 in San Jose07:00 in San Jose08:00 in San Jose09:00 in San Jose10:00 in San Jose11:00 in San Jose12:00 in San Jose13:00 in San Jose14:00 in San Jose15:00 in San Jose16:00 in San Jose17:00 in San Jose18:00 in San Jose19:00 in San Jose20:00 in San Jose21:00 in San Jose22:00 in San Jose23:00 in San Jose
San Jose——000102030405060708091011121314151617181920212223
Istanbul——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with San Jose 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 San Jose, Istanbul and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

there is no working-hour overlap with Istanbul — the nearest workable window is 07:00–08:00 your time (17:00 there).

Where daylight saving pulls them apart

San Jose next changes on Sunday 1 November 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 San Jose?

Istanbul is 10 hours ahead of San Jose right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between San Jose and Istanbul?

There is no hour inside working hours in both cities. 07:00–08:00 your time (17:00 there) is the cheapest compromise, and one side is taking a shoulder hour.

Do San Jose 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.