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Convert India Time to Japan Time

IST · UTC+5:30 → JST · UTC+9

IST is 3 hours 30 minutes behind JST

Mumbai · IST

Tuesday, 8 September 2026

Tokyo · UTC+9

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
MumbaiIST · +05:30
0003060912151821
TokyoUTC+9 · +09:00
0306091215182100

Shared working hours: 09:00–14:30 in Mumbai is 12:30–18:00 in Tokyo.

Working (09–18) Awake, off the clock Asleep (23–07)

Pick a time and share it

12:36 Tue 8 Sep Mumbai = 16:06 Tue 8 Sep Tokyo

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Hour-by-hour conversion

Mumbai (IST)Tokyo (JST)
00:0003:30
01:0004:30
02:0005:30
03:0006:30
04:0007:30
05:0008:30
06:0009:30
07:0010:30
08:0011:30
09:0012:30Both at work
10:0013:30Both at work
11:0014:30Both at work
12:0015:30Now
13:0016:30Both at work
14:0017:30Both at work
15:0018:30
16:0019:30
17:0020:30
18:0021:30
19:0022:30
20:0023:30
21:0000:30next day
22:0001:30next day
23:0002:30next day

About this conversion

IST here means India Time, represented by Mumbai (Asia/Kolkata), currently UTC+5:30. JST means Japan Time, represented by Tokyo (Asia/Tokyo), currently UTC+9.

IST is used by 3 zones, including India. If you meant a different one, see every meaning of IST.

Working hours are shown as 09:00–18:00 local, and sleeping hours as 23:00–07:00. The hour table is anchored on the current day in Mumbai; day boundaries are marked where the date differs.

Quick answers

  • 09:00 IST is 12:30 JST
  • 12:00 IST is 15:30 JST
  • 15:00 IST is 18:30 JST
  • 18:00 IST is 21:30 JST

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