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, 21 October 2026: day of Mercury
- Sunrise
- 05:14
- Sunset
- 17:31
- Next sunrise
- 05:14
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1☿︎ Mercury05:14 – 06:15
- 2☽︎ Moon06:15 – 07:17
- 3♄︎ Saturn07:17 – 08:18
- 4♃︎ Jupiter08:18 – 09:20
- 5♂︎ Mars09:20 – 10:21
- 6☉︎ Sun10:21 – 11:23
- 7♀︎ Venus11:23 – 12:24
- 8☿︎ Mercury12:24 – 13:25
- 9☽︎ Moon13:25 – 14:27
- 10♄︎ Saturn14:27 – 15:28
- 11♃︎ Jupiter15:28 – 16:30
- 12♂︎ Mars16:30 – 17:31
Night
- 1☉︎ Sun17:31 – 18:30
- 2♀︎ Venus18:30 – 19:28
- 3☿︎ Mercury19:28 – 20:27
- 4☽︎ Moon20:27 – 21:25
- 5♄︎ Saturn21:25 – 22:24
- 6♃︎ Jupiter22:24 – 23:22
- 7♂︎ Mars23:22 – 00:21
- 8☉︎ Sun00:21 – 01:19
- 9♀︎ Venus01:19 – 02:18
- 10☿︎ Mercury02:18 – 03:16
- 11☽︎ Moon03:16 – 04:15
- 12♄︎ Saturn04:15 – 05:14
Other cities · Indonesia
Questions
How are the planetary hours calculated in Semarang?
On Wednesday, 21 October 2026, the Sun rises at 05:14 and sets at 17:31: the day lasts 12h 17m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:14, lasts 11h 42m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Mercury, from 05:14 to 06:15: 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.