Planetary hours
in Surabaya.
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, 9 December 2026: day of Mercury
- Sunrise
- 05:05
- Sunset
- 17:37
- Next sunrise
- 05:05
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1☿︎ Mercury05:05 – 06:07
- 2☽︎ Moon06:07 – 07:10
- 3♄︎ Saturn07:10 – 08:13
- 4♃︎ Jupiter08:13 – 09:15
- 5♂︎ Mars09:15 – 10:18
- 6☉︎ Sun10:18 – 11:21
- 7♀︎ Venus11:21 – 12:23
- 8☿︎ Mercury12:23 – 13:26
- 9☽︎ Moon13:26 – 14:29
- 10♄︎ Saturn14:29 – 15:31
- 11♃︎ Jupiter15:31 – 16:34
- 12♂︎ Mars16:34 – 17:37
Night
- 1☉︎ Sun17:37 – 18:34
- 2♀︎ Venus18:34 – 19:31
- 3☿︎ Mercury19:31 – 20:29
- 4☽︎ Moon20:29 – 21:26
- 5♄︎ Saturn21:26 – 22:24
- 6♃︎ Jupiter22:24 – 23:21
- 7♂︎ Mars23:21 – 00:18
- 8☉︎ Sun00:18 – 01:16
- 9♀︎ Venus01:16 – 02:13
- 10☿︎ Mercury02:13 – 03:10
- 11☽︎ Moon03:10 – 04:08
- 12♄︎ Saturn04:08 – 05:05
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Questions
How are the planetary hours calculated in Surabaya?
On Wednesday, 9 December 2026, the Sun rises at 05:05 and sets at 17:37: the day lasts 12h 32m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:05, lasts 11h 28m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mercury, from 05:05 to 06:07: 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.