Daylight saving: local time and fixed CST and PST
The converter starts with Chicago to Los Angeles, using local clock rules. For the standard-time offsets all year, use the fixed CST and PST 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 PST |
|---|---|---|
| 2026-01-15 12:00 | 2026-01-15 10:00 (UTC-08:00) | 2026-01-15 10:00 |
| 2026-07-15 12:00 | 2026-07-15 10:00 (UTC-07:00) | 2026-07-15 10:00 |
12:00 PM Wednesday 15 Jul in Chicago is 10:00 AM Wednesday 15 Jul in Los Angeles (PDT, 2 h behind).
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.