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, 25 September 2026: day of Venus
- Sunrise
- 05:17
- Sunset
- 17:24
- Next sunrise
- 05:16
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1♀︎ Venus05:17 – 06:17
- 2☿︎ Mercury06:17 – 07:18
- 3☽︎ Moon07:18 – 08:18
- 4♄︎ Saturn08:18 – 09:19
- 5♃︎ Jupiter09:19 – 10:20
- 6♂︎ Mars10:20 – 11:20
- 7☉︎ Sun11:20 – 12:21
- 8♀︎ Venus12:21 – 13:22
- 9☿︎ Mercury13:22 – 14:22
- 10☽︎ Moon14:22 – 15:23
- 11♄︎ Saturn15:23 – 16:23
- 12♃︎ Jupiter16:23 – 17:24
Night
- 1♂︎ Mars17:24 – 18:23
- 2☉︎ Sun18:23 – 19:23
- 3♀︎ Venus19:23 – 20:22
- 4☿︎ Mercury20:22 – 21:21
- 5☽︎ Moon21:21 – 22:21
- 6♄︎ Saturn22:21 – 23:20
- 7♃︎ Jupiter23:20 – 00:19
- 8♂︎ Mars00:19 – 01:19
- 9☉︎ Sun01:19 – 02:18
- 10♀︎ Venus02:18 – 03:17
- 11☿︎ Mercury03:17 – 04:17
- 12☽︎ Moon04:17 – 05:16
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Questions
How are the planetary hours calculated in Surabaya?
On Friday, 25 September 2026, the Sun rises at 05:17 and sets at 17:24: the day lasts 12h 07m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:16, lasts 11h 52m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Venus, from 05:17 to 06:17: 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.