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Convert Korean Time to Tonga Time

KST · UTC+9 → TOT · UTC+13

KST is 4 hours behind TOT

Seoul · UTC+9

Tuesday, 8 September 2026

Nuku‘alofa · UTC+13

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
SeoulUTC+9 · +09:00
0003060912151821
Nuku‘alofaUTC+13 · +13:00
0407101316192201

Shared working hours: 09:00–14:00 in Seoul is 13:00–18:00 in Nuku‘alofa.

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

Pick a time and share it

16:07 Tue 8 Sep Seoul = 20:07 Tue 8 Sep Nuku‘alofa

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Hour-by-hour conversion

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

About this conversion

KST here means Korean Time, represented by Seoul (Asia/Seoul), currently UTC+9. TOT means Tonga Time, represented by Nuku‘alofa (Pacific/Tongatapu), currently UTC+13.

KST is used by 2 zones, including South Korea. If you meant a different one, see every meaning of KST.

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 Seoul; day boundaries are marked where the date differs.

Quick answers

  • 09:00 KST is 13:00 TOT
  • 12:00 KST is 16:00 TOT
  • 15:00 KST is 19:00 TOT
  • 18:00 KST is 22:00 TOT

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