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Convert Hawaii-Aleutian Time to Marquesas Time

HAST · UTC−9 → MART · UTC−9:30

HAST is 30 minutes ahead of MART

Adak · HADT

Monday, 7 September 2026

Marquesas · UTC-9:30

Monday, 7 September 2026

When are both sides at work?

0003060912151821
AdakHADT · -09:00
0003060912151821
MarquesasUTC-9:30 · -09:30
2302050811141720

Shared working hours: 09:30–18:00 in Adak is 09:00–17:30 in Marquesas.

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

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22:06 Mon 7 Sep Adak = 21:36 Mon 7 Sep Marquesas

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Hour-by-hour conversion

Adak (HAST)Marquesas (MART)
00:0023:30prev. day
01:0000:30
02:0001:30
03:0002:30
04:0003:30
05:0004:30
06:0005:30
07:0006:30
08:0007:30
09:0008:30
10:0009:30Both at work
11:0010:30Both at work
12:0011:30Both at work
13:0012:30Both at work
14:0013:30Both at work
15:0014:30Both at work
16:0015:30Both at work
17:0016:30Both at work
18:0017:30
19:0018:30
20:0019:30
21:0020:30
22:0021:30Now
23:0022:30

About this conversion

HAST here means Hawaii-Aleutian Time, represented by Adak (America/Adak), currently UTC−9. MART means Marquesas Time, represented by Marquesas (Pacific/Marquesas), currently UTC−9:30.

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 08:30 MART
  • 12:00 HAST is 11:30 MART
  • 15:00 HAST is 14:30 MART
  • 18:00 HAST is 17:30 MART

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