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, 1 October 2026: day of Jupiter
- Sunrise
- 05:13
- Sunset
- 17:23
- Next sunrise
- 05:13
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1♃︎ Jupiter05:13 – 06:14
- 2♂︎ Mars06:14 – 07:15
- 3☉︎ Sun07:15 – 08:16
- 4♀︎ Venus08:16 – 09:17
- 5☿︎ Mercury09:17 – 10:17
- 6☽︎ Moon10:17 – 11:18
- 7♄︎ Saturn11:18 – 12:19
- 8♃︎ Jupiter12:19 – 13:20
- 9♂︎ Mars13:20 – 14:21
- 10☉︎ Sun14:21 – 15:22
- 11♀︎ Venus15:22 – 16:22
- 12☿︎ Mercury16:22 – 17:23
Night
- 1☽︎ Moon17:23 – 18:22
- 2♄︎ Saturn18:22 – 19:21
- 3♃︎ Jupiter19:21 – 20:21
- 4♂︎ Mars20:21 – 21:20
- 5☉︎ Sun21:20 – 22:19
- 6♀︎ Venus22:19 – 23:18
- 7☿︎ Mercury23:18 – 00:17
- 8☽︎ Moon00:17 – 01:16
- 9♄︎ Saturn01:16 – 02:15
- 10♃︎ Jupiter02:15 – 03:15
- 11♂︎ Mars03:15 – 04:14
- 12☉︎ Sun04:14 – 05:13
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Questions
How are the planetary hours calculated in Surabaya?
On Thursday, 1 October 2026, the Sun rises at 05:13 and sets at 17:23: the day lasts 12h 10m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:13, lasts 11h 50m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Jupiter, from 05:13 to 06:14: 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.