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, 19 August 2026: day of Mercury
- Sunrise
- 05:26
- Sunset
- 18:49
- Next sunrise
- 05:26
A day hour lasts 1h 07m; a night hour, 53 min. Local time (Asia/Tehran).
Day
- 1☿︎ Mercury05:26 – 06:33
- 2☽︎ Moon06:33 – 07:40
- 3♄︎ Saturn07:40 – 08:46
- 4♃︎ Jupiter08:46 – 09:53
- 5♂︎ Mars09:53 – 11:00
- 6☉︎ Sun11:00 – 12:07
- 7♀︎ Venus12:07 – 13:14
- 8☿︎ Mercury13:14 – 14:21
- 9☽︎ Moon14:21 – 15:28
- 10♄︎ Saturn15:28 – 16:35
- 11♃︎ Jupiter16:35 – 17:42
- 12♂︎ Mars17:42 – 18:49
Night
- 1☉︎ Sun18:49 – 19:42
- 2♀︎ Venus19:42 – 20:35
- 3☿︎ Mercury20:35 – 21:28
- 4☽︎ Moon21:28 – 22:21
- 5♄︎ Saturn22:21 – 23:14
- 6♃︎ Jupiter23:14 – 00:08
- 7♂︎ Mars00:08 – 01:01
- 8☉︎ Sun01:01 – 01:54
- 9♀︎ Venus01:54 – 02:47
- 10☿︎ Mercury02:47 – 03:40
- 11☽︎ Moon03:40 – 04:33
- 12♄︎ Saturn04:33 – 05:26
Questions
How are the planetary hours calculated in Tehran?
On Wednesday, 19 August 2026, the Sun rises at 05:26 and sets at 18:49: the day lasts 13h 23m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 05:26, lasts 10h 38m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Mercury, from 05:26 to 06:33: 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.