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, 28 September 2026: day of the Moon
- Sunrise
- 05:24
- Sunset
- 17:33
- Next sunrise
- 05:24
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1☽︎ Moon05:24 – 06:25
- 2♄︎ Saturn06:25 – 07:26
- 3♃︎ Jupiter07:26 – 08:26
- 4♂︎ Mars08:26 – 09:27
- 5☉︎ Sun09:27 – 10:28
- 6♀︎ Venus10:28 – 11:29
- 7☿︎ Mercury11:29 – 12:29
- 8☽︎ Moon12:29 – 13:30
- 9♄︎ Saturn13:30 – 14:31
- 10♃︎ Jupiter14:31 – 15:31
- 11♂︎ Mars15:31 – 16:32
- 12☉︎ Sun16:32 – 17:33
Night
- 1♀︎ Venus17:33 – 18:32
- 2☿︎ Mercury18:32 – 19:31
- 3☽︎ Moon19:31 – 20:31
- 4♄︎ Saturn20:31 – 21:30
- 5♃︎ Jupiter21:30 – 22:29
- 6♂︎ Mars22:29 – 23:28
- 7☉︎ Sun23:28 – 00:28
- 8♀︎ Venus00:28 – 01:27
- 9☿︎ Mercury01:27 – 02:26
- 10☽︎ Moon02:26 – 03:25
- 11♄︎ Saturn03:25 – 04:25
- 12♃︎ Jupiter04:25 – 05:24
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Questions
How are the planetary hours calculated in Semarang?
On Monday, 28 September 2026, the Sun rises at 05:24 and sets at 17:33: the day lasts 12h 09m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:24, lasts 11h 51m: twelve night hours of 59 min.
Which planet rules the first hour that day?
The Moon, from 05:24 to 06:25: 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.