GST to HST

Gulf Standard Time

Gulf Standard Time (GST)

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

↑ ↓

Hawaii Standard Time

Hawaii Standard Time (HST)

HST is 10 hours behind Universal Time (UTC-1)

GST to HST Time Conversion

When it is 12:00 PM in GST, it is 10:00 PM the previous day in HST.

📞There is no overlap during standard 9-to-5 business hours, so a call may need to be early or late in the day for one side.

Time difference between GST and HST

GST is 14 hours ahead of HST.

🕐 Subtract 14 hours from GST time to get HST time.

GST uses 4 hours ahead of Universal Time (UTC+4) and HST uses 10 hours behind Universal Time (UTC-1).

GST to HST time conversion chart (24 hours)

Highlighted rows are overlapping 9-to-5 business hours – the best time to schedule a call between GST and HST.

GST Time		HST Time
12 AM GST Time	↔	10 AM HST Time
1 AM GST Time	↔	11 AM HST Time
2 AM GST Time	↔	12 PM HST Time
3 AM GST Time	↔	1 PM HST Time
4 AM GST Time	↔	2 PM HST Time
5 AM GST Time	↔	3 PM HST Time
6 AM GST Time	↔	4 PM HST Time
7 AM GST Time	↔	5 PM HST Time
8 AM GST Time	↔	6 PM HST Time
9 AM GST Time	↔	7 PM HST Time
10 AM GST Time	↔	8 PM HST Time
11 AM GST Time	↔	9 PM HST Time

GST Time		HST Time
12 PM GST Time	↔	10 PM HST Time
1 PM GST Time	↔	11 PM HST Time
2 PM GST Time	↔	12 AM HST Time
3 PM GST Time	↔	1 AM HST Time
4 PM GST Time	↔	2 AM HST Time
5 PM GST Time	↔	3 AM HST Time
6 PM GST Time	↔	4 AM HST Time
7 PM GST Time	↔	5 AM HST Time
8 PM GST Time	↔	6 AM HST Time
9 PM GST Time	↔	7 AM HST Time
10 PM GST Time	↔	8 AM HST Time
11 PM GST Time	↔	9 AM HST Time

GST to HST - Frequently Asked Questions

Q

What is the time difference between GST and HST?

A

GST is 14 hours ahead of HST.

Q

Is GST ahead of or behind HST?

A

GST is ahead of HST by 14 hours.

Q

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

A

It is 7:00 PM the previous day in HST.

Convert GST Time to Popular Time Zones

Convert Time in Popular Time Zones to HST