IRST to GST

Iran Standard Time

Sun Jul, 05, 2026
3:45 PM

Iran Standard Time (IRST)

IRST is 3 hours 30 minutes ahead of Universal Time (UTC+3)

Gulf Standard Time

Sun Jul, 05, 2026
4:15 PM

Gulf Standard Time (GST)

GST is 4 hours ahead of Universal Time (UTC+4)

IRST to GST Time Conversion

When it is 12:00 PM in IRST, it is 12:30 PM in GST.

📞The best time to schedule a call is between 9 AM and 5 PM in IRST, which is between 9 AM and 5 PM in GST.

Time difference between IRST and GST

IRST is 30 minutes behind GST.

🕐 Add 30 minutes to IRST time to get GST time.

IRST uses 3 hours 30 minutes ahead of Universal Time (UTC+3) and GST uses 4 hours ahead of Universal Time (UTC+4).

IRST to GST time conversion chart (24 hours)

Highlighted rows are overlapping 9-to-5 business hours – the best time to schedule a call between IRST and GST.
IRST Time GST Time
12 AM IRST Time 12 AM GST Time
1 AM IRST Time 1 AM GST Time
2 AM IRST Time 2 AM GST Time
3 AM IRST Time 3 AM GST Time
4 AM IRST Time 4 AM GST Time
5 AM IRST Time 5 AM GST Time
6 AM IRST Time 6 AM GST Time
7 AM IRST Time 7 AM GST Time
8 AM IRST Time 8 AM GST Time
9 AM IRST Time 9 AM GST Time
10 AM IRST Time 10 AM GST Time
11 AM IRST Time 11 AM GST Time
IRST Time GST Time
12 PM IRST Time 12 PM GST Time
1 PM IRST Time 1 PM GST Time
2 PM IRST Time 2 PM GST Time
3 PM IRST Time 3 PM GST Time
4 PM IRST Time 4 PM GST Time
5 PM IRST Time 5 PM GST Time
6 PM IRST Time 6 PM GST Time
7 PM IRST Time 7 PM GST Time
8 PM IRST Time 8 PM GST Time
9 PM IRST Time 9 PM GST Time
10 PM IRST Time 10 PM GST Time
11 PM IRST Time 11 PM GST Time

IRST to GST - Frequently Asked Questions

Q

What is the time difference between IRST and GST?

A

IRST is 30 minutes behind GST.

Q

Is IRST ahead of or behind GST?

A

IRST is behind GST by 30 minutes.

Q

When it is 9:00 AM in IRST, what time is it in GST?

A

It is 9:30 AM in GST.