CHAST to GMT Converter
UK Time (GMT / BST) is 12.75 hours behind Chatham Islands (CHAST / CHADT).
Quick Reference
- Chatham Islands
- GMT+13:45
GMT+12:45 starts on Apr 4, 2026
- UK Time
- BST (GMT+1)
GMT starts on Oct 25, 2026
Cities in CHAST
Cities in GMT
Frequently Asked Questions
- What is the difference between CHAST and GMT?
- GMT is 12.75 hours behind CHAST.
- How do I convert CHAST to GMT?
- To convert from CHAST to GMT, subtract 12.75 hours. Use the interactive converter on this page to convert specific times.
- What cities are in CHAST and GMT?
- Cities in CHAST include . Cities in GMT include London, Birmingham, Glasgow, Manchester, Sheffield.