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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 Kumagaya

Mumbai keeps IST (UTC+5:30) and Kumagaya keeps JST (UTC+9) today. Kumagaya is 3½ hours ahead of 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: 13:00–18:00 in Kumagaya (09:00–14:00 your time).

Mumbai and Kumagaya 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
Kumagaya——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Mumbai and Kumagaya

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, Kumagaya and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

09:00 in Mumbai
Inside working hours on both sides
13:00 in Kumagaya
10:00 in Mumbai
Inside working hours on both sides
14:00 in Kumagaya
11:00 in Mumbai
Inside working hours on both sides
15:00 in Kumagaya
12:00 in Mumbai
Inside working hours on both sides
16:00 in Kumagaya

Where daylight saving pulls them apart

Neither Mumbai nor Kumagaya changes its clocks, so the gap above holds all year.

Also useful

Common questions

How many hours ahead is Kumagaya of Mumbai?

Kumagaya is 3½ hours ahead of 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 Kumagaya?

Any hour in 09:00–14:00 Mumbai time is inside working hours in both cities.

Do Mumbai and Kumagaya change clocks on the same date?

Neither city changes its clocks, so the gap between them never moves.