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, 12 August 2026: day of Mercury
- Sunrise
- 05:20
- Sunset
- 18:57
- Next sunrise
- 05:21
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Tehran).
Day
- 1☿︎ Mercury05:20 – 06:28
- 2☽︎ Moon06:28 – 07:36
- 3♄︎ Saturn07:36 – 08:44
- 4♃︎ Jupiter08:44 – 09:52
- 5♂︎ Mars09:52 – 11:01
- 6☉︎ Sun11:01 – 12:09
- 7♀︎ Venus12:09 – 13:17
- 8☿︎ Mercury13:17 – 14:25
- 9☽︎ Moon14:25 – 15:33
- 10♄︎ Saturn15:33 – 16:41
- 11♃︎ Jupiter16:41 – 17:49
- 12♂︎ Mars17:49 – 18:57
Night
- 1☉︎ Sun18:57 – 19:49
- 2♀︎ Venus19:49 – 20:41
- 3☿︎ Mercury20:41 – 21:33
- 4☽︎ Moon21:33 – 22:25
- 5♄︎ Saturn22:25 – 23:17
- 6♃︎ Jupiter23:17 – 00:09
- 7♂︎ Mars00:09 – 01:01
- 8☉︎ Sun01:01 – 01:53
- 9♀︎ Venus01:53 – 02:45
- 10☿︎ Mercury02:45 – 03:37
- 11☽︎ Moon03:37 – 04:29
- 12♄︎ Saturn04:29 – 05:21
Questions
How are the planetary hours calculated in Tehran?
On Wednesday, 12 August 2026, the Sun rises at 05:20 and sets at 18:57: the day lasts 13h 37m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 05:21, lasts 10h 24m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Mercury, from 05:20 to 06:28: 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.