Daylight saving: local time and fixed CST and EST
The converter starts with Chicago to New York, using local clock rules. For the standard-time offsets all year, use the fixed CST and EST 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 CST and EST |
|---|---|---|
| 2026-01-15 12:00 | 2026-01-15 13:00 (UTC-05:00) | 2026-01-15 13:00 |
| 2026-07-15 12:00 | 2026-07-15 13:00 (UTC-04:00) | 2026-07-15 13:00 |
12:00 PM Wednesday 15 Jul in Chicago is 1:00 PM Wednesday 15 Jul in New York (EDT, 1 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.