IRST Time to CST Time Converter

IRST = UTC + 03:30

05:25:49

Wednesday, October 1, 2025

CDT = UTC - 05:00

20:55:49

Tuesday, September 30, 2025

IRST(Iran Standard Time) and CDT(Central Daylight Time) Mapping Table
Iran Standard Time(IRST)Central Daylight Time(CDT)
00:0015:30-1 day
01:0016:30-1 day
02:0017:30-1 day
03:0018:30-1 day
04:0019:30-1 day
05:0020:30-1 day
06:0021:30-1 day
07:0022:30-1 day
08:0023:30-1 day
09:0000:30
10:0001:30
11:0002:30
12:0003:30
13:0004:30
14:0005:30
15:0006:30
16:0007:30
17:0008:30
18:0009:30
19:0010:30
20:0011:30
21:0012:30
22:0013:30
23:0014:30

IRST(Iran Standard Time)

Iran Standard Time(IRST) is 03:30 hours ahead of Coordinated Universal(UTC) Time.This timezone is used during standard time in: AsiaIran Standard Time is a half-hour time zone. Its local time differs by 30 minutes instead of the normal whole hour.

Typical City of IRST (Iran Standard Time)

Iran - Tehran (Winter)

CDT(Central Daylight Time)

Central Daylight Time(CDT) is 05:00 hours behind Coordinated Universal(UTC) Time.This timezone is a Daylight Saving Time timezone and is used in: North America

Typical City of CDT (Central Daylight Time)

USA - Chicago (Summer)