HST to UTC time converter

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

HST UTC-10

Friday, October 16, 2026

UTC UTC

Friday, October 16, 2026

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

HST to UTC conversion table

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

HSTUTC
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 UTC): 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

UTC to HSTHST to GMTHST to ESTHST to CSTHST to MSTHST to PSTHST to CETHST to MSKHST to GSTHST to PKTHST to ISTHST to SGTHST to PHT
GMT to UTCEST to UTCCST to UTCMST to UTCPST to UTCCET to UTCMSK to UTCGST to UTCPKT to UTCIST to UTCSGT to UTCPHT to UTC

Questions and answers

What is the time difference between HST and UTC?

UTC is 10 hours ahead of HST.

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

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

When is the best time to call UTC 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 UTC): working hours on one side, early or late on the other.

Does the time difference between HST and UTC change?

No. The difference stays 10 hours all year.