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 Friday, 17 July 2026: day of Venus
- Sunrise
- 05:01
- Sunset
- 19:19
- Next sunrise
- 05:01
A day hour lasts 1h 12m; a night hour, 49 min. Local time (Asia/Tehran).
Day
- 1♀︎ Venus05:01 – 06:12
- 2☿︎ Mercury06:12 – 07:24
- 3☽︎ Moon07:24 – 08:35
- 4♄︎ Saturn08:35 – 09:47
- 5♃︎ Jupiter09:47 – 10:58
- 6♂︎ Mars10:58 – 12:10
- 7☉︎ Sun12:10 – 13:21
- 8♀︎ Venus13:21 – 14:33
- 9☿︎ Mercury14:33 – 15:44
- 10☽︎ Moon15:44 – 16:56
- 11♄︎ Saturn16:56 – 18:07
- 12♃︎ Jupiter18:07 – 19:19
Night
- 1♂︎ Mars19:19 – 20:08
- 2☉︎ Sun20:08 – 20:56
- 3♀︎ Venus20:56 – 21:45
- 4☿︎ Mercury21:45 – 22:33
- 5☽︎ Moon22:33 – 23:22
- 6♄︎ Saturn23:22 – 00:10
- 7♃︎ Jupiter00:10 – 00:59
- 8♂︎ Mars00:59 – 01:47
- 9☉︎ Sun01:47 – 02:36
- 10♀︎ Venus02:36 – 03:24
- 11☿︎ Mercury03:24 – 04:13
- 12☽︎ Moon04:13 – 05:01
Questions
How are the planetary hours calculated in Tehran?
On Friday, 17 July 2026, the Sun rises at 05:01 and sets at 19:19: the day lasts 14h 18m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:01, lasts 9h 42m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Venus, from 05:01 to 06:12: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.