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Convert Indian Ocean Time to Vostok Time

IOT · UTC+6 → VOST · UTC+5

IOT is 1 hour ahead of VOST

Chagos · UTC+6

Tuesday, 8 September 2026

Mawson · UTC+5

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
ChagosUTC+6 · +06:00
0003060912151821
MawsonUTC+5 · +05:00
2302050811141720

Shared working hours: 10:00–18:00 in Chagos is 09:00–17:00 in Mawson.

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

Pick a time and share it

13:06 Tue 8 Sep Chagos = 12:06 Tue 8 Sep Mawson

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Hour-by-hour conversion

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

About this conversion

IOT here means Indian Ocean Time, represented by Chagos (Indian/Chagos), currently UTC+6. 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 Chagos; day boundaries are marked where the date differs.

Quick answers

  • 09:00 IOT is 08:00 VOST
  • 12:00 IOT is 11:00 VOST
  • 15:00 IOT is 14:00 VOST
  • 18:00 IOT is 17:00 VOST

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