London to Honolulu Time
GMT to HST Converter — 9 AM GMT is 11:00 PM HST
London is 10 hours ahead of Honolulu. Convert any time between London (GMT/BST) and Honolulu (HST) instantly.
London
United Kingdom
Honolulu
United States
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Time Zone Comparison
London to Honolulu Time Conversion Table
| London (GMT) | Honolulu (HST) |
|---|---|
| 12:00 AM | 1:00 PM |
| 2:00 AM | 3:00 PM |
| 4:00 AM | 5:00 PM |
| 6:00 AM | 7:00 PM |
| 8:00 AM | 9:00 PM |
| 10:00 AM | 11:00 PM |
| 12:00 PM | 1:00 AM |
| 2:00 PM | 3:00 AM |
| 4:00 PM | 5:00 AM |
| 6:00 PM | 7:00 AM |
| 8:00 PM | 9:00 AM |
| 10:00 PM | 11:00 AM |
London & Honolulu — Business & Scheduling Guide
London (United Kingdom) is a leading center for finance and international trade, with key industries in finance, insurance, media, and professional services. Honolulu (United States) is a global financial and tech hub, known for technology, finance, healthcare, and entertainment. With a 10-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between London and Honolulu
With Honolulu 10 hours behind London, there is minimal overlap in standard business hours. Most teams alternate meeting times to share the burden of early-morning or late-evening calls fairly. British business culture values politeness and punctuality, with typical hours of 9 AM–5:30 PM. US business hours typically run 9 AM–5 PM, with a culture that values punctuality and efficiency. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.
Daylight Saving Time Considerations
London observes Daylight Saving Time (GMT/BST), but Honolulu does not — it stays on HST year-round. This means the time difference between London and Honolulu changes by 1 hour when London switches clocks. During United Kingdom's summer, the gap is 9–11 hours instead of the standard 10 hours. Mark DST transition dates on your calendar to avoid missed meetings.
GMT to HST — Quick Reference
GMT (GMT/BST) stands for the timezone used in London, United Kingdom (UTC+0). HST (HST) is the timezone used in Honolulu, United States (UTC-10). London is 10 hours ahead of Honolulu.
To convert GMT to HST, subtract 10 hours from GMT time. For example, GMT 9:00 AM = HST 11:00 PM (previous day).
Key Facts
- •Time difference: London (UTC+0) is 10 hours ahead of Honolulu (UTC-10).
- •Daylight Saving Time: London observes DST (GMT/BST). Honolulu does not observe DST (HST).
- •Regions: London is located in United Kingdom and uses the GMT/BST time zone. Honolulu is located in United States and uses the HST time zone.
- •Best time to call: There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
Frequently Asked Questions
What is the time difference between London and Honolulu?
London is 10 hours ahead of Honolulu.
What time is it in Honolulu when it's 9 AM in London?
When it's 9:00 AM in London, it is 11:00 PM in Honolulu (previous day).
What time is 9 PM GMT in HST?
9 PM GMT (London time) is 11:00 AM HST (Honolulu time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between London and Honolulu?
There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
How do I convert GMT to HST?
GMT (GMT/BST) is the timezone for London, United Kingdom (UTC+0). HST (HST) is the timezone for Honolulu, United States (UTC-10). London is 10 hours ahead of Honolulu. Quick examples: 9 AM GMT = 11:00 PM HST, 12 PM GMT = 2:00 AM HST, 3 PM GMT = 5:00 AM HST, 6 PM GMT = 8:00 AM HST.
Is London ahead of or behind Honolulu?
London is 10 hours ahead of Honolulu. When it's noon in London, it's 2:00 AM in Honolulu.
Does London or Honolulu change clocks for Daylight Saving Time?
Yes, London observes DST and switches between GMT/BST. Honolulu does not observe DST — it stays on HST year-round. Because only one city observes DST, the time difference shifts by 1 hour during transition periods (typically March/April and October/November).
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