HST to UTC Time Converter

Convert Hawaii Standard Time (HST) to Coordinated Universal Time (UTC). Both time zones are shown live below; current offset between them is 10 hours ahead.

Honolulu · Hawaii Standard Time
16:11:36
Tuesday, May 12, 2026
HST · UTC-10:00
UTC · Coordinated Universal Time
02:11:36
Wednesday, May 13, 2026
UTC · UTC+00:00

Convert a specific time

From: HST (Honolulu)
To: UTC (UTC)
--:--

Daylight Saving status right now

HST (Hawaii Standard Time)
Observes DST
No
UTC (Coordinated Universal Time)
Observes DST
No

When can HST and UTC meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
HST
UTC
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Honolulu (HST). Each row shows the local working-hours state in that zone for the same moment in time.
No overlap during strict 9-5 working hours; some flexibility needed.
If both sides are willing to extend to 8am-7pm, the available window is 08:00–08:00 HST (18:00–18:00 UTC).

Hour-by-hour HST to UTC conversion table

HST time (Honolulu)UTC time (UTC)Status
00:00 Tue10:00 TueUTC working
01:00 Tue11:00 TueUTC working
02:00 Tue12:00 TueUTC working
03:00 Tue13:00 TueUTC working
04:00 Tue14:00 TueUTC working
05:00 Tue15:00 TueUTC working
06:00 Tue16:00 TueUTC working
07:00 Tue17:00 TueOff-hours both sides
08:00 Tue18:00 TueOff-hours both sides
09:00 Tue19:00 TueHST working
10:00 Tue20:00 TueHST working
11:00 Tue21:00 TueHST working
12:00 Tue22:00 TueHST working
13:00 Tue23:00 TueHST working
14:00 Tue00:00 WedHST working
15:00 Tue01:00 WedHST working
16:00 Tue02:00 WedHST working
17:00 Tue03:00 WedOff-hours both sides
18:00 Tue04:00 WedOff-hours both sides
19:00 Tue05:00 WedOff-hours both sides
20:00 Tue06:00 WedOff-hours both sides
21:00 Tue07:00 WedOff-hours both sides
22:00 Tue08:00 WedOff-hours both sides
23:00 Tue09:00 WedUTC working

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Hawaii Standard Time (HST)
IANA identifier
Pacific/Honolulu
Current UTC offset
UTC-10:00
Current abbreviation
HST
Major cities in this zone
Honolulu
Coordinated Universal Time (UTC)
IANA identifier
UTC
Current UTC offset
UTC+00:00
Current abbreviation
UTC
Major cities in this zone
UTC

Sun today in Honolulu and UTC

Honolulu
Sunrise
05:55
Sunset
19:02
Solar noon
12:29
Daylight
13h 6m

Related converters

UTC to HST (reverse)HST to ESTHST to PSTHST to GMTHST to CETHST to ISTEST to UTCPST to UTCGMT to UTCCET to UTCIST to UTC
Looking for local time? See time in Honolulu or time in UTC.

Frequently asked questions

What is the time difference between HST and UTC right now?+
UTC (Coordinated Universal Time) is currently 10 hours ahead HST (Hawaii Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does HST or UTC observe daylight saving time?+
HST: does not observe daylight saving time. UTC: does not observe daylight saving time.
When is the best time to schedule a meeting between HST and UTC?+
Standard 9-5 hours do not overlap. Extending to 8am-7pm gives a window of 08:00–08:00 HST (18:00–18:00 UTC).
What time is it in UTC when it is 12:00 noon in Honolulu?+
When it is 12:00 Tue in Honolulu (HST), it is 22:00 Tue in UTC (UTC).
Which IANA time zone identifiers are used for HST and UTC?+
HST maps to "Pacific/Honolulu" in the IANA database. UTC maps to "UTC". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Honolulu ahead of or behind UTC?+
Whether Honolulu (HST) is ahead of or behind UTC (UTC) depends on the current UTC offsets. Right now UTC is 10 hours ahead HST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for HST and UTC?+
HST is UTC-10:00 (HST) and UTC is UTC+00:00 (UTC). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both HST and UTC?+
Not during a strict 9am-5pm window. If both sides flex to 8am-7pm, the available meeting window between HST and UTC is 08:00–08:00 HST.