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, 19 December 2026: day of Saturn
- Sunrise
- 05:09
- Sunset
- 17:42
- Next sunrise
- 05:09
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1♄︎ Saturn05:09 – 06:12
- 2♃︎ Jupiter06:12 – 07:14
- 3♂︎ Mars07:14 – 08:17
- 4☉︎ Sun08:17 – 09:20
- 5♀︎ Venus09:20 – 10:23
- 6☿︎ Mercury10:23 – 11:25
- 7☽︎ Moon11:25 – 12:28
- 8♄︎ Saturn12:28 – 13:31
- 9♃︎ Jupiter13:31 – 14:34
- 10♂︎ Mars14:34 – 15:36
- 11☉︎ Sun15:36 – 16:39
- 12♀︎ Venus16:39 – 17:42
Night
- 1☿︎ Mercury17:42 – 18:39
- 2☽︎ Moon18:39 – 19:36
- 3♄︎ Saturn19:36 – 20:34
- 4♃︎ Jupiter20:34 – 21:31
- 5♂︎ Mars21:31 – 22:28
- 6☉︎ Sun22:28 – 23:26
- 7♀︎ Venus23:26 – 00:23
- 8☿︎ Mercury00:23 – 01:20
- 9☽︎ Moon01:20 – 02:18
- 10♄︎ Saturn02:18 – 03:15
- 11♃︎ Jupiter03:15 – 04:12
- 12♂︎ Mars04:12 – 05:09
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Questions
How are the planetary hours calculated in Surabaya?
On Saturday, 19 December 2026, the Sun rises at 05:09 and sets at 17:42: the day lasts 12h 33m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:09, lasts 11h 28m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Saturn, from 05:09 to 06:12: 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.