# Institute of Geophysics, University of Tehran

Tehran is a prayer time calculation method. It places Fajr when the sun is 17.7° below the horizon and Isha 14° below the horizon. Maghrib is at sunset. It is the conventional method in Iran.

| Parameter | Value |
|---|---|
| Method | Institute of Geophysics, University of Tehran |
| Fajr angle | 17.7° |
| Isha | 14° below the horizon |
| Maghrib | at sunset |
| Used in | Iran |

## Common questions

**What Fajr angle does Tehran use?**

Tehran places Fajr when the sun is 17.7° below the horizon.

**When does Isha begin under Tehran?**

Isha is 14° below the horizon.

**Where is Tehran used?**

It is the conventional method in Iran.

## Source

Published by: QuranOnline
Canonical page: https://quranonlineread.com/prayer-times/methods/tehran/
Last updated: 2026-09-19T04:02:37.128Z
Note: These are the published parameters of a named convention. Where a local authority announces different times, follow the local authority.