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Convert Iran Time to Ulaanbaatar Time

IRST · UTC+3:30 → ULAT · UTC+8

IRST is 4 hours 30 minutes behind ULAT

Tehran · UTC+3:30

Tuesday, 8 September 2026

Ulan Bator · UTC+8

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
TehranUTC+3:30 · +03:30
0003060912151821
Ulan BatorUTC+8 · +08:00
0407101316192201

Shared working hours: 09:00–13:30 in Tehran is 13:30–18:00 in Ulan Bator.

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

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10:36 Tue 8 Sep Tehran = 15:06 Tue 8 Sep Ulan Bator

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Hour-by-hour conversion

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

About this conversion

IRST here means Iran Time, represented by Tehran (Asia/Tehran), currently UTC+3:30. 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 Tehran; day boundaries are marked where the date differs.

Quick answers

  • 09:00 IRST is 13:30 ULAT
  • 12:00 IRST is 16:30 ULAT
  • 15:00 IRST is 19:30 ULAT
  • 18:00 IRST is 22:30 ULAT

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