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Convert Hawaii-Aleutian Time to Vostok Time

HAST · UTC−9 → VOST · UTC+5

HAST is 14 hours behind VOST

Adak · HADT

Monday, 7 September 2026

Mawson · UTC+5

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
AdakHADT · -09:00
0003060912151821
MawsonUTC+5 · +05:00
1417202302050811

No overlap in standard working hours. Closest workable window: 19:00–23:00 in Adak, which is 09:00–13:00 in Mawson.

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

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22:06 Mon 7 Sep Adak = 12:06 Tue 8 Sep Mawson

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Hour-by-hour conversion

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

About this conversion

HAST here means Hawaii-Aleutian Time, represented by Adak (America/Adak), currently UTC−9. VOST means Vostok Time, represented by Mawson (Antarctica/Vostok), currently UTC+5.

HAST is used by 2 zones, including United States. If you meant a different one, see every meaning of HAST.

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 Adak; day boundaries are marked where the date differs.

Quick answers

  • 09:00 HAST is 23:00 VOST
  • 12:00 HAST is 02:00 VOST
  • 15:00 HAST is 05:00 VOST
  • 18:00 HAST is 08:00 VOST

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