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Convert French Guiana Time to Iran Time

GFT · UTC−3 → IRST · UTC+3:30

GFT is 6 hours 30 minutes behind IRST

Cayenne · UTC-3

Tuesday, 8 September 2026

Tehran · UTC+3:30

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
CayenneUTC-3 · -03:00
0003060912151821
TehranUTC+3:30 · +03:30
0609121518210003

Shared working hours: 09:00–11:30 in Cayenne is 15:30–18:00 in Tehran.

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

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04:05 Tue 8 Sep Cayenne = 10:35 Tue 8 Sep Tehran

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Hour-by-hour conversion

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

About this conversion

GFT here means French Guiana Time, represented by Cayenne (America/Cayenne), currently UTC−3. 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 Cayenne; day boundaries are marked where the date differs.

Quick answers

  • 09:00 GFT is 15:30 IRST
  • 12:00 GFT is 18:30 IRST
  • 15:00 GFT is 21:30 IRST
  • 18:00 GFT is 00:30 IRST

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