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Global ClockTime zone converter & meeting planner
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09
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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 Mumbai vs Donostia / San Sebastián

Mumbai keeps IST (UTC+5:30) and Donostia / San Sebastián keeps CEST (UTC+2) today. Donostia / San Sebastián is 3½ hours behind Mumbai; 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: 09:00–15:00 in Donostia / San Sebastián (12:00–18:00 your time).

Mumbai and Donostia / San Sebastián hour by hour, with the working-hour overlap shaded
City00:00 in Mumbai01:00 in Mumbai02:00 in Mumbai03:00 in Mumbai04:00 in Mumbai05:00 in Mumbai06:00 in Mumbai07:00 in Mumbai08:00 in Mumbai09:00 in Mumbai10:00 in Mumbai11:00 in Mumbai12:00 in Mumbai13:00 in Mumbai14:00 in Mumbai15:00 in Mumbai16:00 in Mumbai17:00 in Mumbai18:00 in Mumbai19:00 in Mumbai20:00 in Mumbai21:00 in Mumbai22:00 in Mumbai23:00 in Mumbai
Mumbai——000102030405060708091011121314151617181920212223
Donostia / San Sebastián——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Mumbai and Donostia / San Sebastián

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

Best hours to call

12:00 in Mumbai
Inside working hours on both sides
09:00 in Donostia / San Sebastián
13:00 in Mumbai
Inside working hours on both sides
10:00 in Donostia / San Sebastián
14:00 in Mumbai
Inside working hours on both sides
11:00 in Donostia / San Sebastián
15:00 in Mumbai
Inside working hours on both sides
12:00 in Donostia / San Sebastián

Where daylight saving pulls them apart

Donostia / San Sebastián 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 Donostia / San Sebastián of Mumbai?

Donostia / San Sebastián is 3½ hours behind Mumbai right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Mumbai and Donostia / San Sebastián?

Any hour in 12:00–18:00 Mumbai time is inside working hours in both cities.

Do Mumbai and Donostia / San Sebastián 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.