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Convert Iran Time to South Africa Time

IRST · UTC+3:30 → SAST · UTC+2

IRST is 1 hour 30 minutes ahead of SAST

Tehran · UTC+3:30

Tuesday, 8 September 2026

Johannesburg · SAST

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
TehranUTC+3:30 · +03:30
0003060912151821
JohannesburgSAST · +02:00
2201040710131619

Shared working hours: 10:30–18:00 in Tehran is 09:00–16:30 in Johannesburg.

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

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10:36 Tue 8 Sep Tehran = 09:06 Tue 8 Sep Johannesburg

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Hour-by-hour conversion

Tehran (IRST)Johannesburg (SAST)
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
10:0008:30Now
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
16:0014:30Both at work
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

IRST here means Iran Time, represented by Tehran (Asia/Tehran), currently UTC+3:30. SAST means South Africa Time, represented by Johannesburg (Africa/Johannesburg), currently UTC+2.

SAST is used by 3 zones, including South Africa. See every meaning of SAST.

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

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