CHAST to JST Converter
Japan Time (JST) is 4.75 hours behind Chatham Islands (CHAST / CHADT).
Quick Reference
- Chatham Islands
- GMT+13:45
GMT+12:45 starts on Apr 4, 2026
- Japan Time
- JST (GMT+9)
No Daylight Saving Time
Cities in CHAST
Cities in JST
Frequently Asked Questions
- What is the difference between CHAST and JST?
- JST is 4.75 hours behind CHAST.
- How do I convert CHAST to JST?
- To convert from CHAST to JST, subtract 4.75 hours. Use the interactive converter on this page to convert specific times.
- What cities are in CHAST and JST?
- Cities in CHAST include . Cities in JST include Tokyo, Yokohama, Osaka, Nagoya, Sapporo.