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Convert Gulf Time to Iran Time

GST · UTC+4 → IRST · UTC+3:30

GST is 30 minutes ahead of IRST

Dubai · GST

Tuesday, 8 September 2026

Tehran · UTC+3:30

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
DubaiGST · +04:00
0003060912151821
TehranUTC+3:30 · +03:30
2302050811141720

Shared working hours: 09:30–18:00 in Dubai is 09:00–17:30 in Tehran.

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

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11:05 Tue 8 Sep Dubai = 10:35 Tue 8 Sep Tehran

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Hour-by-hour conversion

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

About this conversion

GST here means Gulf Time, represented by Dubai (Asia/Dubai), currently UTC+4. IRST means Iran Time, represented by Tehran (Asia/Tehran), currently UTC+3:30.

GST is used by 3 zones, including United Arab Emirates. If you meant a different one, see every meaning of GST.

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 Dubai; day boundaries are marked where the date differs.

Quick answers

  • 09:00 GST is 08:30 IRST
  • 12:00 GST is 11:30 IRST
  • 15:00 GST is 14:30 IRST
  • 18:00 GST is 17:30 IRST

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