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, 2 October 2026: day of Venus
- Sunrise
- 05:13
- Sunset
- 17:23
- Next sunrise
- 05:12
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1♀︎ Venus05:13 – 06:14
- 2☿︎ Mercury06:14 – 07:15
- 3☽︎ Moon07:15 – 08:15
- 4♄︎ Saturn08:15 – 09:16
- 5♃︎ Jupiter09:16 – 10:17
- 6♂︎ Mars10:17 – 11:18
- 7☉︎ Sun11:18 – 12:19
- 8♀︎ Venus12:19 – 13:20
- 9☿︎ Mercury13:20 – 14:21
- 10☽︎ Moon14:21 – 15:21
- 11♄︎ Saturn15:21 – 16:22
- 12♃︎ Jupiter16:22 – 17:23
Night
- 1♂︎ Mars17:23 – 18:22
- 2☉︎ Sun18:22 – 19:21
- 3♀︎ Venus19:21 – 20:20
- 4☿︎ Mercury20:20 – 21:20
- 5☽︎ Moon21:20 – 22:19
- 6♄︎ Saturn22:19 – 23:18
- 7♃︎ Jupiter23:18 – 00:17
- 8♂︎ Mars00:17 – 01:16
- 9☉︎ Sun01:16 – 02:15
- 10♀︎ Venus02:15 – 03:14
- 11☿︎ Mercury03:14 – 04:13
- 12☽︎ Moon04:13 – 05:12
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Questions
How are the planetary hours calculated in Surabaya?
On Friday, 2 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 05:12, lasts 11h 49m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Venus, 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: 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.