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Convert French Southern & Antarctic Time to Iran Time

FSAT · UTC+5 → IRST · UTC+3:30

FSAT is 1 hour 30 minutes ahead of IRST

Port-aux-Français · UTC+5

Wednesday, 7 October 2026

Tehran · UTC+3:30

Wednesday, 7 October 2026

When are both sides at work?

0003060912151821
Port-aux-FrançaisUTC+5 · +05:00
0003060912151821
TehranUTC+3:30 · +03:30
2201040710131619

Shared working hours: 10:30–18:00 in Port-aux-Français is 09:00–16:30 in Tehran.

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

Pick a time and share it

16:24 Wed 7 Oct Port-aux-Français = 14:54 Wed 7 Oct Tehran

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Hour-by-hour conversion

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

About this conversion

FSAT here means French Southern & Antarctic Time, represented by Port-aux-Français (Indian/Kerguelen), currently UTC+5. IRST means Iran Time, represented by Tehran (Asia/Tehran), currently UTC+3:30.

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 Port-aux-Français; day boundaries are marked where the date differs.

Quick answers

  • 09:00 FSAT is 07:30 IRST
  • 12:00 FSAT is 10:30 IRST
  • 15:00 FSAT is 13:30 IRST
  • 18:00 FSAT is 16:30 IRST

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