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 Monday, 12 October 2026: day of the Moon
- Sunrise
- 05:17
- Sunset
- 17:31
- Next sunrise
- 05:17
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1☽︎ Moon05:17 – 06:19
- 2♄︎ Saturn06:19 – 07:20
- 3♃︎ Jupiter07:20 – 08:21
- 4♂︎ Mars08:21 – 09:22
- 5☉︎ Sun09:22 – 10:23
- 6♀︎ Venus10:23 – 11:24
- 7☿︎ Mercury11:24 – 12:26
- 8☽︎ Moon12:26 – 13:27
- 9♄︎ Saturn13:27 – 14:28
- 10♃︎ Jupiter14:28 – 15:29
- 11♂︎ Mars15:29 – 16:30
- 12☉︎ Sun16:30 – 17:31
Night
- 1♀︎ Venus17:31 – 18:30
- 2☿︎ Mercury18:30 – 19:29
- 3☽︎ Moon19:29 – 20:28
- 4♄︎ Saturn20:28 – 21:27
- 5♃︎ Jupiter21:27 – 22:25
- 6♂︎ Mars22:25 – 23:24
- 7☉︎ Sun23:24 – 00:23
- 8♀︎ Venus00:23 – 01:22
- 9☿︎ Mercury01:22 – 02:21
- 10☽︎ Moon02:21 – 03:19
- 11♄︎ Saturn03:19 – 04:18
- 12♃︎ Jupiter04:18 – 05:17
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Questions
How are the planetary hours calculated in Semarang?
On Monday, 12 October 2026, the Sun rises at 05:17 and sets at 17:31: the day lasts 12h 14m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:17, lasts 11h 46m: twelve night hours of 59 min.
Which planet rules the first hour that day?
The Moon, from 05:17 to 06:19: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.