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, 15 July 2026: day of Mercury
- Sunrise
- 04:59
- Sunset
- 19:20
- Next sunrise
- 05:00
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Asia/Tehran).
Day
- 1☿︎ Mercury04:59 – 06:11
- 2☽︎ Moon06:11 – 07:23
- 3♄︎ Saturn07:23 – 08:34
- 4♃︎ Jupiter08:34 – 09:46
- 5♂︎ Mars09:46 – 10:58
- 6☉︎ Sun10:58 – 12:10
- 7♀︎ Venus12:10 – 13:21
- 8☿︎ Mercury13:21 – 14:33
- 9☽︎ Moon14:33 – 15:45
- 10♄︎ Saturn15:45 – 16:57
- 11♃︎ Jupiter16:57 – 18:08
- 12♂︎ Mars18:08 – 19:20
Night
- 1☉︎ Sun19:20 – 20:08
- 2♀︎ Venus20:08 – 20:57
- 3☿︎ Mercury20:57 – 21:45
- 4☽︎ Moon21:45 – 22:33
- 5♄︎ Saturn22:33 – 23:22
- 6♃︎ Jupiter23:22 – 00:10
- 7♂︎ Mars00:10 – 00:58
- 8☉︎ Sun00:58 – 01:47
- 9♀︎ Venus01:47 – 02:35
- 10☿︎ Mercury02:35 – 03:23
- 11☽︎ Moon03:23 – 04:12
- 12♄︎ Saturn04:12 – 05:00
Questions
How are the planetary hours calculated in Tehran?
On Wednesday, 15 July 2026, the Sun rises at 04:59 and sets at 19:20: the day lasts 14h 21m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:00, lasts 9h 40m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mercury, from 04:59 to 06:11: 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.