GMT to HST
Convert London Time — GMT/BST to Hawaii Time — Honolulu — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in London, it's 10:00 PM in Honolulu the previous day. Honolulu is 11 hours behind London. Use the converter above to turn any GMT time into HST, or scan the hour-by-hour table below for the full day.
GMT to HST at a glance
Planning a meeting between London and Honolulu
London and Honolulu share no standard 9-to-5 overlap, so a live call usually means one side taking an early-morning or late-evening slot. The hourly table below helps you pick the least-inconvenient time for everyone.
Hour-by-hour: London to Honolulu
A full day mapped from GMT to HST.
Frequently asked
Is Honolulu ahead of or behind London?
Honolulu is 11 hours behind London.
What is 12:00 PM GMT in HST?
12:00 PM in London is 1:00 AM in Honolulu.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so GMT and HST automatically reflect the correct daylight-saving offset for the current date.