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 Monday, 12 October 2026: day of the Moon
- Sunrise
- 05:08
- Sunset
- 17:22
- Next sunrise
- 05:08
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1☽︎ Moon05:08 – 06:09
- 2♄︎ Saturn06:09 – 07:10
- 3♃︎ Jupiter07:10 – 08:12
- 4♂︎ Mars08:12 – 09:13
- 5☉︎ Sun09:13 – 10:14
- 6♀︎ Venus10:14 – 11:15
- 7☿︎ Mercury11:15 – 12:16
- 8☽︎ Moon12:16 – 13:17
- 9♄︎ Saturn13:17 – 14:19
- 10♃︎ Jupiter14:19 – 15:20
- 11♂︎ Mars15:20 – 16:21
- 12☉︎ Sun16:21 – 17:22
Night
- 1♀︎ Venus17:22 – 18:21
- 2☿︎ Mercury18:21 – 19:20
- 3☽︎ Moon19:20 – 20:19
- 4♄︎ Saturn20:19 – 21:17
- 5♃︎ Jupiter21:17 – 22:16
- 6♂︎ Mars22:16 – 23:15
- 7☉︎ Sun23:15 – 00:14
- 8♀︎ Venus00:14 – 01:12
- 9☿︎ Mercury01:12 – 02:11
- 10☽︎ Moon02:11 – 03:10
- 11♄︎ Saturn03:10 – 04:09
- 12♃︎ Jupiter04:09 – 05:08
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Questions
How are the planetary hours calculated in Surabaya?
On Monday, 12 October 2026, the Sun rises at 05:08 and sets at 17:22: the day lasts 12h 14m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:08, lasts 11h 45m: twelve night hours of 59 min.
Which planet rules the first hour that day?
The Moon, from 05:08 to 06:09: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.