Planetary hours
in Tehran.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Saturday, 18 July 2026: day of Saturn
- Sunrise
- 05:01
- Sunset
- 19:18
- Next sunrise
- 05:02
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Asia/Tehran).
Day
- 1♄︎ Saturn05:01 – 06:13
- 2♃︎ Jupiter06:13 – 07:24
- 3♂︎ Mars07:24 – 08:36
- 4☉︎ Sun08:36 – 09:47
- 5♀︎ Venus09:47 – 10:58
- 6☿︎ Mercury10:58 – 12:10
- 7☽︎ Moon12:10 – 13:21
- 8♄︎ Saturn13:21 – 14:33
- 9♃︎ Jupiter14:33 – 15:44
- 10♂︎ Mars15:44 – 16:56
- 11☉︎ Sun16:56 – 18:07
- 12♀︎ Venus18:07 – 19:18
Night
- 1☿︎ Mercury19:18 – 20:07
- 2☽︎ Moon20:07 – 20:56
- 3♄︎ Saturn20:56 – 21:44
- 4♃︎ Jupiter21:44 – 22:33
- 5♂︎ Mars22:33 – 23:22
- 6☉︎ Sun23:22 – 00:10
- 7♀︎ Venus00:10 – 00:59
- 8☿︎ Mercury00:59 – 01:47
- 9☽︎ Moon01:47 – 02:36
- 10♄︎ Saturn02:36 – 03:25
- 11♃︎ Jupiter03:25 – 04:13
- 12♂︎ Mars04:13 – 05:02
Questions
How are the planetary hours calculated in Tehran?
On Saturday, 18 July 2026, the Sun rises at 05:01 and sets at 19:18: the day lasts 14h 17m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 05:02, lasts 9h 44m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Saturn, from 05:01 to 06:13: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.