Time Zone Converter | Convert IRST to GST

IRST → GST conversion table

What time it is in GST for each hour in IRST today. +1 = next calendar day

IRST to GST — 24-hour conversion
IRST	GST
00:00	23:30 (2026-09-25)
01:00	00:30
02:00	01:30
03:00	02:30
04:00	03:30
05:00	04:30
06:00	05:30
07:00	06:30
08:00	07:30
09:00	08:30
10:00	09:30
11:00	10:30
12:00	11:30
13:00	12:30
14:00	13:30
15:00	14:30
16:00	15:30
17:00	16:30
18:00	17:30
19:00	18:30
20:00	19:30
21:00	20:30
22:00	21:30
23:00	22:30

Morning

12:00 AM IRST 11:30 PM GST +1

1:00 AM IRST 12:30 AM GST

2:00 AM IRST 1:30 AM GST

3:00 AM IRST 2:30 AM GST

4:00 AM IRST 3:30 AM GST

5:00 AM IRST 4:30 AM GST

6:00 AM IRST 5:30 AM GST

7:00 AM IRST 6:30 AM GST

8:00 AM IRST 7:30 AM GST

9:00 AM IRST 8:30 AM GST

10:00 AM IRST 9:30 AM GST

11:00 AM IRST 10:30 AM GST

Afternoon

12:00 PM IRST 11:30 AM GST

1:00 PM IRST 12:30 PM GST

2:00 PM IRST 1:30 PM GST

3:00 PM IRST 2:30 PM GST

4:00 PM IRST 3:30 PM GST

5:00 PM IRST 4:30 PM GST

Evening

6:00 PM IRST 5:30 PM GST

7:00 PM IRST 6:30 PM GST

8:00 PM IRST 7:30 PM GST

9:00 PM IRST 8:30 PM GST

10:00 PM IRST 9:30 PM GST

11:00 PM IRST 10:30 PM GST

Frequently asked questions

Use the hour-by-hour table below to see how each clock hour in Iran Standard Time (IRST) maps to Gulf Standard Time (GST). Offsets can change with daylight saving.

Enter a time in the converter above, or look up the matching row in the 24-hour conversion table. Both times use today's date in their respective zones.

Yes. When either zone observes DST, the offset between them can shift by an hour. The table reflects the offset for today.

IRST to GST Converter
Convert time between Iran Standard Time (IRST) and Gulf Standard Time (GST).

Time Zone Comparison Chart

IRST → GST conversion table

Frequently asked questions

Convert IRST to other time zones

Convert GST to other time zones

IRST to GST Converter Convert time between Iran Standard Time (IRST) and Gulf Standard Time (GST).

Time Zone Comparison Chart

IRST → GST conversion table

Frequently asked questions

What is the time difference between IRST and GST?

How do I convert IRST to GST?

Do daylight saving changes affect this conversion?

Convert IRST to other time zones

Convert GST to other time zones

IRST to GST Converter
Convert time between Iran Standard Time (IRST) and Gulf Standard Time (GST).