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 Wednesday, 3 December 2025: day of Mercury
- Sunrise
- 06:57
- Sunset
- 16:50
- Next sunrise
- 06:58
A day hour lasts 49 min; a night hour, 1h 11m. Local time (Asia/Tehran).
Day
- 1☿︎ Mercury06:57 – 07:46
- 2☽︎ Moon07:46 – 08:36
- 3♄︎ Saturn08:36 – 09:25
- 4♃︎ Jupiter09:25 – 10:15
- 5♂︎ Mars10:15 – 11:04
- 6☉︎ Sun11:04 – 11:54
- 7♀︎ Venus11:54 – 12:43
- 8☿︎ Mercury12:43 – 13:32
- 9☽︎ Moon13:32 – 14:22
- 10♄︎ Saturn14:22 – 15:11
- 11♃︎ Jupiter15:11 – 16:01
- 12♂︎ Mars16:01 – 16:50
Night
- 1☉︎ Sun16:50 – 18:01
- 2♀︎ Venus18:01 – 19:11
- 3☿︎ Mercury19:11 – 20:22
- 4☽︎ Moon20:22 – 21:33
- 5♄︎ Saturn21:33 – 22:43
- 6♃︎ Jupiter22:43 – 23:54
- 7♂︎ Mars23:54 – 01:05
- 8☉︎ Sun01:05 – 02:15
- 9♀︎ Venus02:15 – 03:26
- 10☿︎ Mercury03:26 – 04:36
- 11☽︎ Moon04:36 – 05:47
- 12♄︎ Saturn05:47 – 06:58
Questions
How are the planetary hours calculated in Tehran?
On Wednesday, 3 December 2025, the Sun rises at 06:57 and sets at 16:50: the day lasts 9h 53m, that is twelve day hours of 49 min. The night, until the next sunrise at 06:58, lasts 14h 07m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
Mercury, from 06:57 to 07:46: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.