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 Wednesday, 16 December 2026: day of Mercury
- Sunrise
- 05:17
- Sunset
- 17:49
- Next sunrise
- 05:18
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1☿︎ Mercury05:17 – 06:20
- 2☽︎ Moon06:20 – 07:23
- 3♄︎ Saturn07:23 – 08:25
- 4♃︎ Jupiter08:25 – 09:28
- 5♂︎ Mars09:28 – 10:31
- 6☉︎ Sun10:31 – 11:33
- 7♀︎ Venus11:33 – 12:36
- 8☿︎ Mercury12:36 – 13:39
- 9☽︎ Moon13:39 – 14:41
- 10♄︎ Saturn14:41 – 15:44
- 11♃︎ Jupiter15:44 – 16:47
- 12♂︎ Mars16:47 – 17:49
Night
- 1☉︎ Sun17:49 – 18:47
- 2♀︎ Venus18:47 – 19:44
- 3☿︎ Mercury19:44 – 20:41
- 4☽︎ Moon20:41 – 21:39
- 5♄︎ Saturn21:39 – 22:36
- 6♃︎ Jupiter22:36 – 23:34
- 7♂︎ Mars23:34 – 00:31
- 8☉︎ Sun00:31 – 01:28
- 9♀︎ Venus01:28 – 02:26
- 10☿︎ Mercury02:26 – 03:23
- 11☽︎ Moon03:23 – 04:20
- 12♄︎ Saturn04:20 – 05:18
Other cities · Indonesia
Questions
How are the planetary hours calculated in Semarang?
On Wednesday, 16 December 2026, the Sun rises at 05:17 and sets at 17:49: the day lasts 12h 32m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:18, lasts 11h 29m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mercury, from 05:17 to 06:20: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.