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, 3 December 2026: day of Jupiter
- Sunrise
- 05:12
- Sunset
- 17:43
- Next sunrise
- 05:13
A day hour lasts 1h 03m; a night hour, 58 min. Local time (Asia/Jakarta).
Day
- 1♃︎ Jupiter05:12 – 06:15
- 2♂︎ Mars06:15 – 07:17
- 3☉︎ Sun07:17 – 08:20
- 4♀︎ Venus08:20 – 09:22
- 5☿︎ Mercury09:22 – 10:25
- 6☽︎ Moon10:25 – 11:28
- 7♄︎ Saturn11:28 – 12:30
- 8♃︎ Jupiter12:30 – 13:33
- 9♂︎ Mars13:33 – 14:35
- 10☉︎ Sun14:35 – 15:38
- 11♀︎ Venus15:38 – 16:40
- 12☿︎ Mercury16:40 – 17:43
Night
- 1☽︎ Moon17:43 – 18:40
- 2♄︎ Saturn18:40 – 19:38
- 3♃︎ Jupiter19:38 – 20:35
- 4♂︎ Mars20:35 – 21:33
- 5☉︎ Sun21:33 – 22:30
- 6♀︎ Venus22:30 – 23:28
- 7☿︎ Mercury23:28 – 00:25
- 8☽︎ Moon00:25 – 01:23
- 9♄︎ Saturn01:23 – 02:20
- 10♃︎ Jupiter02:20 – 03:18
- 11♂︎ Mars03:18 – 04:15
- 12☉︎ Sun04:15 – 05:13
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Questions
How are the planetary hours calculated in Semarang?
On Thursday, 3 December 2026, the Sun rises at 05:12 and sets at 17:43: the day lasts 12h 30m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:13, lasts 11h 30m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Jupiter, from 05:12 to 06:15: 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.