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Convert Korean Time to Réunion Time

KST · UTC+9 → RET · UTC+4

KST is 5 hours ahead of RET

Seoul · UTC+9

Tuesday, 8 September 2026

Saint-Denis · UTC+4

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
SeoulUTC+9 · +09:00
0003060912151821
Saint-DenisUTC+4 · +04:00
1922010407101316

Shared working hours: 14:00–18:00 in Seoul is 09:00–13:00 in Saint-Denis.

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

Pick a time and share it

16:07 Tue 8 Sep Seoul = 11:07 Tue 8 Sep Saint-Denis

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Hour-by-hour conversion

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

About this conversion

KST here means Korean Time, represented by Seoul (Asia/Seoul), currently UTC+9. RET means Réunion Time, represented by Saint-Denis (Indian/Reunion), currently UTC+4.

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 04:00 RET
  • 12:00 KST is 07:00 RET
  • 15:00 KST is 10:00 RET
  • 18:00 KST is 13:00 RET

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