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 Friday, 8 January 2027: day of Venus
- Sunrise
- 05:29
- Sunset
- 18:00
- Next sunrise
- 05:30
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1♀︎ Venus05:29 – 06:32
- 2☿︎ Mercury06:32 – 07:34
- 3☽︎ Moon07:34 – 08:37
- 4♄︎ Saturn08:37 – 09:39
- 5♃︎ Jupiter09:39 – 10:42
- 6♂︎ Mars10:42 – 11:44
- 7☉︎ Sun11:44 – 12:47
- 8♀︎ Venus12:47 – 13:49
- 9☿︎ Mercury13:49 – 14:52
- 10☽︎ Moon14:52 – 15:54
- 11♄︎ Saturn15:54 – 16:57
- 12♃︎ Jupiter16:57 – 18:00
Night
- 1♂︎ Mars18:00 – 18:57
- 2☉︎ Sun18:57 – 19:55
- 3♀︎ Venus19:55 – 20:52
- 4☿︎ Mercury20:52 – 21:50
- 5☽︎ Moon21:50 – 22:47
- 6♄︎ Saturn22:47 – 23:45
- 7♃︎ Jupiter23:45 – 00:42
- 8♂︎ Mars00:42 – 01:40
- 9☉︎ Sun01:40 – 02:37
- 10♀︎ Venus02:37 – 03:35
- 11☿︎ Mercury03:35 – 04:32
- 12☽︎ Moon04:32 – 05:30
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Questions
How are the planetary hours calculated in Semarang?
On Friday, 8 January 2027, the Sun rises at 05:29 and sets at 18:00: the day lasts 12h 31m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:30, lasts 11h 30m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Venus, from 05:29 to 06:32: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.