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Convert Japan Time to Vostok Time

JST · UTC+9 → VOST · UTC+5

JST is 4 hours ahead of VOST

Tokyo · UTC+9

Tuesday, 8 September 2026

Mawson · UTC+5

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
TokyoUTC+9 · +09:00
0003060912151821
MawsonUTC+5 · +05:00
2023020508111417

Shared working hours: 13:00–18:00 in Tokyo is 09:00–14:00 in Mawson.

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

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16:06 Tue 8 Sep Tokyo = 12:06 Tue 8 Sep Mawson

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Hour-by-hour conversion

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

About this conversion

JST here means Japan Time, represented by Tokyo (Asia/Tokyo), currently UTC+9. VOST means Vostok Time, represented by Mawson (Antarctica/Vostok), currently UTC+5.

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 Tokyo; day boundaries are marked where the date differs.

Quick answers

  • 09:00 JST is 05:00 VOST
  • 12:00 JST is 08:00 VOST
  • 15:00 JST is 11:00 VOST
  • 18:00 JST is 14:00 VOST

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