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Convert Hawaii-Aleutian Time to Petropavlovsk-Kamchatski Time

HAST · UTC−9 → PETT · UTC+12

HAST is 21 hours behind PETT

Adak · HADT

Monday, 7 September 2026

Petropavlovsk-Kamchatsky · UTC+12

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
AdakHADT · -09:00
0003060912151821
Petropavlovsk-KamchatskyUTC+12 · +12:00
2100030609121518

Shared working hours: 12:00–18:00 in Adak is 09:00–15:00 in Petropavlovsk-Kamchatsky.

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

Pick a time and share it

22:06 Mon 7 Sep Adak = 19:06 Tue 8 Sep Petropavlovsk-Kamchatsky

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Hour-by-hour conversion

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

About this conversion

HAST here means Hawaii-Aleutian Time, represented by Adak (America/Adak), currently UTC−9. PETT means Petropavlovsk-Kamchatski Time, represented by Petropavlovsk-Kamchatsky (Asia/Kamchatka), currently UTC+12.

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 06:00 PETT
  • 12:00 HAST is 09:00 PETT
  • 15:00 HAST is 12:00 PETT
  • 18:00 HAST is 15:00 PETT

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