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Convert Réunion Time to Ulaanbaatar Time

RET · UTC+4 → ULAT · UTC+8

RET is 4 hours behind ULAT

Saint-Denis · UTC+4

Tuesday, 8 September 2026

Ulan Bator · UTC+8

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
Saint-DenisUTC+4 · +04:00
0003060912151821
Ulan BatorUTC+8 · +08:00
0407101316192201

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

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

Pick a time and share it

11:04 Tue 8 Sep Saint-Denis = 15:04 Tue 8 Sep Ulan Bator

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Hour-by-hour conversion

Saint-Denis (RET)Ulan Bator (ULAT)
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
11:0015:00Now
12:0016:00Both at work
13:0017:00Both at work
14:0018:00
15:0019:00
16:0020:00
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

RET here means Réunion Time, represented by Saint-Denis (Indian/Reunion), currently UTC+4. ULAT means Ulaanbaatar Time, represented by Ulan Bator (Asia/Ulaanbaatar), currently UTC+8.

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 Saint-Denis; day boundaries are marked where the date differs.

Quick answers

  • 09:00 RET is 13:00 ULAT
  • 12:00 RET is 16:00 ULAT
  • 15:00 RET is 19:00 ULAT
  • 18:00 RET is 22:00 ULAT

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