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 Thursday, 8 October 2026: day of Jupiter
- Sunrise
- 05:10
- Sunset
- 17:22
- Next sunrise
- 05:09
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1♃︎ Jupiter05:10 – 06:11
- 2♂︎ Mars06:11 – 07:12
- 3☉︎ Sun07:12 – 08:13
- 4♀︎ Venus08:13 – 09:14
- 5☿︎ Mercury09:14 – 10:15
- 6☽︎ Moon10:15 – 11:16
- 7♄︎ Saturn11:16 – 12:17
- 8♃︎ Jupiter12:17 – 13:18
- 9♂︎ Mars13:18 – 14:19
- 10☉︎ Sun14:19 – 15:20
- 11♀︎ Venus15:20 – 16:21
- 12☿︎ Mercury16:21 – 17:22
Night
- 1☽︎ Moon17:22 – 18:21
- 2♄︎ Saturn18:21 – 19:20
- 3♃︎ Jupiter19:20 – 20:19
- 4♂︎ Mars20:19 – 21:18
- 5☉︎ Sun21:18 – 22:17
- 6♀︎ Venus22:17 – 23:16
- 7☿︎ Mercury23:16 – 00:15
- 8☽︎ Moon00:15 – 01:14
- 9♄︎ Saturn01:14 – 02:13
- 10♃︎ Jupiter02:13 – 03:12
- 11♂︎ Mars03:12 – 04:10
- 12☉︎ Sun04:10 – 05:09
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Questions
How are the planetary hours calculated in Surabaya?
On Thursday, 8 October 2026, the Sun rises at 05:10 and sets at 17:22: the day lasts 12h 13m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:09, lasts 11h 47m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Jupiter, from 05:10 to 06:11: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.