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 Saturday, 31 October 2026: day of Saturn
- Sunrise
- 05:01
- Sunset
- 17:23
- Next sunrise
- 05:01
A day hour lasts 1h 02m; a night hour, 58 min. Local time (Asia/Jakarta).
Day
- 1♄︎ Saturn05:01 – 06:03
- 2♃︎ Jupiter06:03 – 07:05
- 3♂︎ Mars07:05 – 08:07
- 4☉︎ Sun08:07 – 09:09
- 5♀︎ Venus09:09 – 10:10
- 6☿︎ Mercury10:10 – 11:12
- 7☽︎ Moon11:12 – 12:14
- 8♄︎ Saturn12:14 – 13:16
- 9♃︎ Jupiter13:16 – 14:18
- 10♂︎ Mars14:18 – 15:19
- 11☉︎ Sun15:19 – 16:21
- 12♀︎ Venus16:21 – 17:23
Night
- 1☿︎ Mercury17:23 – 18:21
- 2☽︎ Moon18:21 – 19:19
- 3♄︎ Saturn19:19 – 20:17
- 4♃︎ Jupiter20:17 – 21:16
- 5♂︎ Mars21:16 – 22:14
- 6☉︎ Sun22:14 – 23:12
- 7♀︎ Venus23:12 – 00:10
- 8☿︎ Mercury00:10 – 01:08
- 9☽︎ Moon01:08 – 02:07
- 10♄︎ Saturn02:07 – 03:05
- 11♃︎ Jupiter03:05 – 04:03
- 12♂︎ Mars04:03 – 05:01
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Questions
How are the planetary hours calculated in Surabaya?
On Saturday, 31 October 2026, the Sun rises at 05:01 and sets at 17:23: the day lasts 12h 22m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 05:01, lasts 11h 38m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Saturn, from 05:01 to 06:03: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.