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 Tuesday, 22 December 2026: day of Mars
- Sunrise
- 05:10
- Sunset
- 17:43
- Next sunrise
- 05:11
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1♂︎ Mars05:10 – 06:13
- 2☉︎ Sun06:13 – 07:16
- 3♀︎ Venus07:16 – 08:19
- 4☿︎ Mercury08:19 – 09:21
- 5☽︎ Moon09:21 – 10:24
- 6♄︎ Saturn10:24 – 11:27
- 7♃︎ Jupiter11:27 – 12:30
- 8♂︎ Mars12:30 – 13:32
- 9☉︎ Sun13:32 – 14:35
- 10♀︎ Venus14:35 – 15:38
- 11☿︎ Mercury15:38 – 16:41
- 12☽︎ Moon16:41 – 17:43
Night
- 1♄︎ Saturn17:43 – 18:41
- 2♃︎ Jupiter18:41 – 19:38
- 3♂︎ Mars19:38 – 20:35
- 4☉︎ Sun20:35 – 21:33
- 5♀︎ Venus21:33 – 22:30
- 6☿︎ Mercury22:30 – 23:27
- 7☽︎ Moon23:27 – 00:24
- 8♄︎ Saturn00:24 – 01:22
- 9♃︎ Jupiter01:22 – 02:19
- 10♂︎ Mars02:19 – 03:16
- 11☉︎ Sun03:16 – 04:14
- 12♀︎ Venus04:14 – 05:11
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Questions
How are the planetary hours calculated in Surabaya?
On Tuesday, 22 December 2026, the Sun rises at 05:10 and sets at 17:43: the day lasts 12h 33m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:11, lasts 11h 28m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mars, from 05:10 to 06:13: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.