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, 12 September 2026: day of Saturn
- Sunrise
- 05:24
- Sunset
- 17:26
- Next sunrise
- 05:23
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Asia/Jakarta).
Day
- 1♄︎ Saturn05:24 – 06:24
- 2♃︎ Jupiter06:24 – 07:24
- 3♂︎ Mars07:24 – 08:24
- 4☉︎ Sun08:24 – 09:25
- 5♀︎ Venus09:25 – 10:25
- 6☿︎ Mercury10:25 – 11:25
- 7☽︎ Moon11:25 – 12:25
- 8♄︎ Saturn12:25 – 13:25
- 9♃︎ Jupiter13:25 – 14:26
- 10♂︎ Mars14:26 – 15:26
- 11☉︎ Sun15:26 – 16:26
- 12♀︎ Venus16:26 – 17:26
Night
- 1☿︎ Mercury17:26 – 18:26
- 2☽︎ Moon18:26 – 19:26
- 3♄︎ Saturn19:26 – 20:25
- 4♃︎ Jupiter20:25 – 21:25
- 5♂︎ Mars21:25 – 22:25
- 6☉︎ Sun22:25 – 23:25
- 7♀︎ Venus23:25 – 00:24
- 8☿︎ Mercury00:24 – 01:24
- 9☽︎ Moon01:24 – 02:24
- 10♄︎ Saturn02:24 – 03:24
- 11♃︎ Jupiter03:24 – 04:23
- 12♂︎ Mars04:23 – 05:23
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Questions
How are the planetary hours calculated in Surabaya?
On Saturday, 12 September 2026, the Sun rises at 05:24 and sets at 17:26: the day lasts 12h 02m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 05:23, lasts 11h 57m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Saturn, from 05:24 to 06:24: 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.