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Convert Hawaii-Aleutian Time to West Africa Time

HAST · UTC−9 → WAT · UTC+1

HAST is 10 hours behind WAT

Adak · HADT

Monday, 7 September 2026

Lagos · WAT

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
AdakHADT · -09:00
0003060912151821
LagosWAT · +01:00
1013161922010407

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

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

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22:06 Mon 7 Sep Adak = 08:06 Tue 8 Sep Lagos

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Hour-by-hour conversion

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

About this conversion

HAST here means Hawaii-Aleutian Time, represented by Adak (America/Adak), currently UTC−9. WAT means West Africa Time, represented by Lagos (Africa/Lagos), currently UTC+1.

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

WAT is used by 11 zones, including Nigeria. See every meaning of WAT.

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 19:00 WAT
  • 12:00 HAST is 22:00 WAT
  • 15:00 HAST is 01:00 WAT
  • 18:00 HAST is 04:00 WAT

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