Planetary hours
in Semarang.
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 Thursday, 24 December 2026: day of Jupiter
- Sunrise
- 05:21
- Sunset
- 17:53
- Next sunrise
- 05:22
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1♃︎ Jupiter05:21 – 06:24
- 2♂︎ Mars06:24 – 07:27
- 3☉︎ Sun07:27 – 08:29
- 4♀︎ Venus08:29 – 09:32
- 5☿︎ Mercury09:32 – 10:35
- 6☽︎ Moon10:35 – 11:37
- 7♄︎ Saturn11:37 – 12:40
- 8♃︎ Jupiter12:40 – 13:43
- 9♂︎ Mars13:43 – 14:45
- 10☉︎ Sun14:45 – 15:48
- 11♀︎ Venus15:48 – 16:51
- 12☿︎ Mercury16:51 – 17:53
Night
- 1☽︎ Moon17:53 – 18:51
- 2♄︎ Saturn18:51 – 19:48
- 3♃︎ Jupiter19:48 – 20:45
- 4♂︎ Mars20:45 – 21:43
- 5☉︎ Sun21:43 – 22:40
- 6♀︎ Venus22:40 – 23:37
- 7☿︎ Mercury23:37 – 00:35
- 8☽︎ Moon00:35 – 01:32
- 9♄︎ Saturn01:32 – 02:30
- 10♃︎ Jupiter02:30 – 03:27
- 11♂︎ Mars03:27 – 04:24
- 12☉︎ Sun04:24 – 05:22
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Questions
How are the planetary hours calculated in Semarang?
On Thursday, 24 December 2026, the Sun rises at 05:21 and sets at 17:53: the day lasts 12h 32m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:22, lasts 11h 29m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Jupiter, from 05:21 to 06:24: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.