HST to GMT time converter

GMT is 10 hours ahead of HST. When it is 9:00 AM in HST, it is 7:00 PM in GMT.

HST UTC-10

Friday, October 16, 2026

GMT UTC

Saturday, October 17, 2026

HST
Hawaii-Aleutian Standard Time
Fri, Oct 16
UTC-10
GMT
Greenwich Mean Time
Sat, Oct 17
UTC+10h
Finding your time zone…
Shared working hours (9:00–18:00)

HST to GMT conversion table

Every hour of today in HST and the matching time in GMT. Light rows are typical working hours (9:00–18:00).

HSTGMT
12:00 AM10:00 AM
1:00 AM11:00 AM
2:00 AM12:00 PM
3:00 AM1:00 PM
4:00 AM2:00 PM
5:00 AM3:00 PM
6:00 AM4:00 PM
7:00 AM5:00 PM
8:00 AM6:00 PM
9:00 AM7:00 PM
10:00 AM8:00 PM
11:00 AM9:00 PM
12:00 PM10:00 PM
1:00 PM11:00 PM
2:00 PM12:00 AM+1 day
3:00 PM1:00 AM+1 day
4:00 PM2:00 AM+1 day
5:00 PM3:00 AM+1 day
6:00 PM4:00 AM+1 day
7:00 PM5:00 AM+1 day
8:00 PM6:00 AM+1 day
9:00 PM7:00 AM+1 day
10:00 PM8:00 AM+1 day
11:00 PM9:00 AM+1 day

Best time to call or meet

Working hours don't overlap fully. The closest fit is 7:00 AM – 8:00 AM in HST (5:00 PM – 6:00 PM in GMT): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference stays 10 hours all year.

More conversions

GMT to HSTHST to UTCHST to ESTHST to CSTHST to MSTHST to PSTHST to CETHST to MSKHST to GSTHST to PKTHST to ISTHST to SGTHST to PHT
UTC to GMTEST to GMTCST to GMTMST to GMTPST to GMTCET to GMTMSK to GMTGST to GMTPKT to GMTIST to GMTSGT to GMTPHT to GMT

Questions and answers

What is the time difference between HST and GMT?

GMT is 10 hours ahead of HST.

What time is it in GMT when it is 9 AM in HST?

When it is 9:00 AM in HST, it is 7:00 PM in GMT.

When is the best time to call GMT from HST?

Working hours don't overlap fully. The closest fit is 7:00 AM – 8:00 AM in HST (5:00 PM – 6:00 PM in GMT): working hours on one side, early or late on the other.

Does the time difference between HST and GMT change?

No. The difference stays 10 hours all year.