From
HST
Time Converter
HST to GMT Time Converter
Convert Hawaii Time to GMT with a live clock and clean permalinks.
To
GMT / BST
When it is 7:30 AM in Hawaii Time, it is 5:30 PM in GMT.
HST to GMT at a glance
GMT is 10 hours ahead of Hawaii Time. If someone gives you a time in Hawaii Time, move the clock by 10 hours to read it in GMT. A 9:00 AM start in Honolulu becomes 7:00 PM in London.
What Hawaii Time covers
Hawaii Time is used in Honolulu and the rest of Hawaii. It does not switch for daylight saving time. It is helpful when your team works with travel, hospitality, or customers in the Pacific.
What GMT covers
GMT is commonly used as the United Kingdom time reference. In summer, the UK moves to British Summer Time. It is a familiar baseline for Europe, Africa, and global remote teams.
Quick answers
What is the time difference between HST and GMT?
GMT is 10 hours ahead of Hawaii Time.
What happens to a 3:00 PM meeting in HST?
It lands at 1:00 AM in GMT.
Does daylight saving time matter for HST to GMT?
Hawaii Time and GMT are shown using the offsets that are active right now, so the result already reflects any daylight saving change in effect today.