Time zone
UTC+3:30
6 atlas cities
All these cities share a single civil time despite lying at different longitudes. Tehran, Isfahan, Karaj, and Tabriz sit west of the zone's reference meridian, so the sun peaks after clock noon there. Mashhad and Shiraz lie east of it, seeing solar noon arrive earlier on the clock. The zone thus flattens a real east-west spread of solar timing into one shared civil reading.
Atlas cities6
Longitude span46.3° to 59.6°
Solar meridian52.5°where this offset would be exact
When the sun actually peaks
| City | Country | Solar noon | Clock vs sun |
|---|---|---|---|
| Tabriz | IR | 12:25 | +0.41 h |
| Karaj | IR | 12:06 | +0.10 h |
| Tehran | IR | 12:04 | +0.07 h |
| Isfahan | IR | 12:03 | +0.06 h |
| Shiraz | IR | 11:00 | -0.00 h |
| Mashhad | IR | 11:32 | -0.47 h |
A positive figure means the clock runs ahead of the sun — midday on the clock arrives before the sun reaches its highest point.