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Convert Irkutsk Time to Japan Time

IRKT · UTC+8 → JST · UTC+9

IRKT is 1 hour behind JST

Irkutsk · UTC+8

Tuesday, 8 September 2026

Tokyo · UTC+9

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
IrkutskUTC+8 · +08:00
0003060912151821
TokyoUTC+9 · +09:00
0104071013161922

Shared working hours: 09:00–17:00 in Irkutsk is 10:00–18:00 in Tokyo.

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

Pick a time and share it

15:06 Tue 8 Sep Irkutsk = 16:06 Tue 8 Sep Tokyo

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Hour-by-hour conversion

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

About this conversion

IRKT here means Irkutsk Time, represented by Irkutsk (Asia/Irkutsk), currently UTC+8. JST means Japan Time, represented by Tokyo (Asia/Tokyo), currently UTC+9.

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 Irkutsk; day boundaries are marked where the date differs.

Quick answers

  • 09:00 IRKT is 10:00 JST
  • 12:00 IRKT is 13:00 JST
  • 15:00 IRKT is 16:00 JST
  • 18:00 IRKT is 19:00 JST

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