Daylight saving: local time and fixed EST and JST
The converter starts with New York to Tokyo, using local clock rules. For the standard-time offsets all year, use the fixed EST and JST button.
These examples use noon on the dates shown. A converted date can be the previous or following day.
| Starting date and time | Using local city rules | Using fixed EST and JST |
|---|---|---|
| 2026-01-15 12:00 | 2026-01-16 02:00 (UTC+09:00) | 2026-01-16 02:00 |
| 2026-07-15 12:00 | 2026-07-16 01:00 (UTC+09:00) | 2026-07-16 02:00 |
12:00 PM Wednesday 15 Jul in New York is 1:00 AM Thursday 16 Jul in Tokyo (JST, 13 h ahead).
Why daylight saving conversions need a date explains skipped and repeated clock readings. The rules here come from the browser’s time zone data and can lag a government change.