UTC to HST time converter

HST is 10 hours behind UTC. When it is 9:00 AM in UTC, it is 11:00 PM (Thu, Oct 15) in HST.

UTC UTC

Friday, October 16, 2026

HST UTC-10

Friday, October 16, 2026

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

UTC to HST conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 5:00 PM – 6:00 PM in UTC (7:00 AM – 8:00 AM in HST): 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

HST to UTCUTC to GMTUTC to ESTUTC to CSTUTC to MSTUTC to PSTUTC to CETUTC to MSKUTC to GSTUTC to PKTUTC to ISTUTC to SGTUTC to PHT
GMT to HSTEST to HSTCST to HSTMST to HSTPST to HSTCET to HSTMSK to HSTGST to HSTPKT to HSTIST to HSTSGT to HSTPHT to HST

Questions and answers

What is the time difference between UTC and HST?

HST is 10 hours behind UTC.

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

When it is 9:00 AM in UTC, it is 11:00 PM (Thu, Oct 15) in HST.

When is the best time to call HST from UTC?

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

Does the time difference between UTC and HST change?

No. The difference stays 10 hours all year.