GMT to HST Time Converter

Convert Greenwich Mean Time (GMT) to Hawaii Standard Time (HST). Both time zones are shown live below; current offset between them is 11 hours behind.

London · Greenwich Mean Time
14:02:17
Thursday, May 14, 2026
GMT+1 · UTC+01:00
Honolulu · Hawaii Standard Time
03:02:17
Thursday, May 14, 2026
HST · UTC-10:00

Convert a specific time

From: GMT (London)
To: HST (Honolulu)
--:--

Daylight Saving status right now

GMT (Greenwich Mean Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00
HST (Hawaii Standard Time)
Observes DST
No

Heads up: GMT observes DST while HST does not. The 11-hour difference shown above will shift by one hour when GMT starts or ends DST.

When can GMT and HST 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
GMT
HST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in London (GMT). Each row shows the local working-hours state in that zone for the same moment in time.
No business-hours overlap exists between GMT and HST.
The two zones are too far apart for synchronous meetings during normal working hours. Plan async or schedule outside 9-5 on at least one side.

Hour-by-hour GMT to HST conversion table

GMT time (London)HST time (Honolulu)Status
00:00 Thu13:00 WedHST working
01:00 Thu14:00 WedHST working
02:00 Thu15:00 WedHST working
03:00 Thu16:00 WedHST working
04:00 Thu17:00 WedOff-hours both sides
05:00 Thu18:00 WedOff-hours both sides
06:00 Thu19:00 WedOff-hours both sides
07:00 Thu20:00 WedOff-hours both sides
08:00 Thu21:00 WedOff-hours both sides
09:00 Thu22:00 WedGMT working
10:00 Thu23:00 WedGMT working
11:00 Thu00:00 ThuGMT working
12:00 Thu01:00 ThuGMT working
13:00 Thu02:00 ThuGMT working
14:00 Thu03:00 ThuGMT working
15:00 Thu04:00 ThuGMT working
16:00 Thu05:00 ThuGMT working
17:00 Thu06:00 ThuOff-hours both sides
18:00 Thu07:00 ThuOff-hours both sides
19:00 Thu08:00 ThuOff-hours both sides
20:00 Thu09:00 ThuHST working
21:00 Thu10:00 ThuHST working
22:00 Thu11:00 ThuHST working
23:00 Thu12:00 ThuHST 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

Greenwich Mean Time (GMT)
IANA identifier
Europe/London
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LondonManchesterEdinburghBirmingham
Hawaii Standard Time (HST)
IANA identifier
Pacific/Honolulu
Current UTC offset
UTC-10:00
Current abbreviation
HST
Major cities in this zone
Honolulu

Sun today in London and Honolulu

London
Sunrise
05:11
Sunset
20:44
Solar noon
12:58
Daylight
15h 32m
Honolulu
Sunrise
05:55
Sunset
19:03
Solar noon
12:29
Daylight
13h 8m

Related converters

HST to GMT (reverse)GMT to ESTGMT to PSTGMT to UTCGMT to CETGMT to ISTEST to HSTPST to HSTUTC to HSTCET to HSTIST to HST
Looking for local time? See time in London or time in Honolulu.

Frequently asked questions

What is the time difference between GMT and HST right now?+
HST (Hawaii Standard Time) is currently 11 hours behind GMT (Greenwich Mean Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does GMT or HST observe daylight saving time?+
GMT: observes daylight saving time. HST: does not observe daylight saving time.
When is the best time to schedule a meeting between GMT and HST?+
GMT and HST have no business-hour overlap, even at the edges of a typical workday. Async collaboration or non-9-5 scheduling is the practical choice.
What time is it in Honolulu when it is 12:00 noon in London?+
When it is 12:00 Thu in London (GMT), it is 01:00 Thu in Honolulu (HST).
Which IANA time zone identifiers are used for GMT and HST?+
GMT maps to "Europe/London" in the IANA database. HST maps to "Pacific/Honolulu". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is London ahead of or behind Honolulu?+
Whether London (GMT) is ahead of or behind Honolulu (HST) depends on the current UTC offsets. Right now HST is 11 hours behind GMT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for GMT and HST?+
GMT is UTC+01:00 (GMT+1) and HST is UTC-10:00 (HST). 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 GMT and HST?+
No standard business-hours overlap exists between GMT and HST. Plan asynchronous work or schedule outside 9-5 on at least one side.