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 Tuesday, 21 July 2026: day of Mars
- Sunrise
- 05:03
- Sunset
- 19:17
- Next sunrise
- 05:04
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Asia/Tehran).
Day
- 1♂︎ Mars05:03 – 06:15
- 2☉︎ Sun06:15 – 07:26
- 3♀︎ Venus07:26 – 08:37
- 4☿︎ Mercury08:37 – 09:48
- 5☽︎ Moon09:48 – 10:59
- 6♄︎ Saturn10:59 – 12:10
- 7♃︎ Jupiter12:10 – 13:21
- 8♂︎ Mars13:21 – 14:32
- 9☉︎ Sun14:32 – 15:43
- 10♀︎ Venus15:43 – 16:55
- 11☿︎ Mercury16:55 – 18:06
- 12☽︎ Moon18:06 – 19:17
Night
- 1♄︎ Saturn19:17 – 20:06
- 2♃︎ Jupiter20:06 – 20:55
- 3♂︎ Mars20:55 – 21:44
- 4☉︎ Sun21:44 – 22:33
- 5♀︎ Venus22:33 – 23:21
- 6☿︎ Mercury23:21 – 00:10
- 7☽︎ Moon00:10 – 00:59
- 8♄︎ Saturn00:59 – 01:48
- 9♃︎ Jupiter01:48 – 02:37
- 10♂︎ Mars02:37 – 03:26
- 11☉︎ Sun03:26 – 04:15
- 12♀︎ Venus04:15 – 05:04
Questions
How are the planetary hours calculated in Tehran?
On Tuesday, 21 July 2026, the Sun rises at 05:03 and sets at 19:17: the day lasts 14h 13m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 05:04, lasts 9h 47m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Mars, from 05:03 to 06:15: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.