Time zone
UTC−8
4 atlas cities
All four cities keep a common civil time yet lie east of the zone's reference meridian, so in each the sun reaches its highest point before clock noon. Los Angeles, Tijuana, San Diego, and Mexicali share this pattern, differing only in how early solar noon falls, a reminder that a single time zone can flatten real longitudinal spread into one uniform clock reading.
Atlas cities4
Longitude span-118.2° to -115.5°
Solar meridian-120.0°where this offset would be exact
When the sun actually peaks
| City | Country | Solar noon | Clock vs sun |
|---|---|---|---|
| Los Angeles | US | 11:53 | -0.12 h |
| San Diego | US | 11:49 | -0.19 h |
| Tijuana | MX | 11:48 | -0.20 h |
| Mexicali | MX | 11:42 | -0.30 h |
A positive figure means the clock runs ahead of the sun — midday on the clock arrives before the sun reaches its highest point.