Planetary hours
in Arusha.
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, 15 December 2026: day of Mars
- Sunrise
- 06:18
- Sunset
- 18:37
- Next sunrise
- 06:19
A day hour lasts 1h 02m; a night hour, 58 min. Local time (Africa/Dar_es_Salaam).
Day
- 1♂︎ Mars06:18 – 07:20
- 2☉︎ Sun07:20 – 08:21
- 3♀︎ Venus08:21 – 09:23
- 4☿︎ Mercury09:23 – 10:25
- 5☽︎ Moon10:25 – 11:26
- 6♄︎ Saturn11:26 – 12:28
- 7♃︎ Jupiter12:28 – 13:29
- 8♂︎ Mars13:29 – 14:31
- 9☉︎ Sun14:31 – 15:33
- 10♀︎ Venus15:33 – 16:34
- 11☿︎ Mercury16:34 – 17:36
- 12☽︎ Moon17:36 – 18:37
Night
- 1♄︎ Saturn18:37 – 19:36
- 2♃︎ Jupiter19:36 – 20:34
- 3♂︎ Mars20:34 – 21:33
- 4☉︎ Sun21:33 – 22:31
- 5♀︎ Venus22:31 – 23:30
- 6☿︎ Mercury23:30 – 00:28
- 7☽︎ Moon00:28 – 01:27
- 8♄︎ Saturn01:27 – 02:25
- 9♃︎ Jupiter02:25 – 03:23
- 10♂︎ Mars03:23 – 04:22
- 11☉︎ Sun04:22 – 05:20
- 12♀︎ Venus05:20 – 06:19
Other cities · Tanzania
Questions
How are the planetary hours calculated in Arusha?
On Tuesday, 15 December 2026, the Sun rises at 06:18 and sets at 18:37: the day lasts 12h 19m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 06:19, lasts 11h 41m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Mars, from 06:18 to 07:20: 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.