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 Friday, 4 December 2026: day of Venus
- Sunrise
- 05:03
- Sunset
- 17:34
- Next sunrise
- 05:03
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1♀︎ Venus05:03 – 06:06
- 2☿︎ Mercury06:06 – 07:08
- 3☽︎ Moon07:08 – 08:11
- 4♄︎ Saturn08:11 – 09:13
- 5♃︎ Jupiter09:13 – 10:16
- 6♂︎ Mars10:16 – 11:19
- 7☉︎ Sun11:19 – 12:21
- 8♀︎ Venus12:21 – 13:24
- 9☿︎ Mercury13:24 – 14:26
- 10☽︎ Moon14:26 – 15:29
- 11♄︎ Saturn15:29 – 16:32
- 12♃︎ Jupiter16:32 – 17:34
Night
- 1♂︎ Mars17:34 – 18:32
- 2☉︎ Sun18:32 – 19:29
- 3♀︎ Venus19:29 – 20:26
- 4☿︎ Mercury20:26 – 21:24
- 5☽︎ Moon21:24 – 22:21
- 6♄︎ Saturn22:21 – 23:19
- 7♃︎ Jupiter23:19 – 00:16
- 8♂︎ Mars00:16 – 01:14
- 9☉︎ Sun01:14 – 02:11
- 10♀︎ Venus02:11 – 03:08
- 11☿︎ Mercury03:08 – 04:06
- 12☽︎ Moon04:06 – 05:03
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Questions
How are the planetary hours calculated in Surabaya?
On Friday, 4 December 2026, the Sun rises at 05:03 and sets at 17:34: the day lasts 12h 31m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:03, lasts 11h 29m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Venus, from 05:03 to 06:06: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.