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, 10 September 2026: day of Jupiter
- Sunrise
- 05:25
- Sunset
- 17:26
- Next sunrise
- 05:24
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Asia/Jakarta).
Day
- 1♃︎ Jupiter05:25 – 06:25
- 2♂︎ Mars06:25 – 07:25
- 3☉︎ Sun07:25 – 08:25
- 4♀︎ Venus08:25 – 09:25
- 5☿︎ Mercury09:25 – 10:26
- 6☽︎ Moon10:26 – 11:26
- 7♄︎ Saturn11:26 – 12:26
- 8♃︎ Jupiter12:26 – 13:26
- 9♂︎ Mars13:26 – 14:26
- 10☉︎ Sun14:26 – 15:26
- 11♀︎ Venus15:26 – 16:26
- 12☿︎ Mercury16:26 – 17:26
Night
- 1☽︎ Moon17:26 – 18:26
- 2♄︎ Saturn18:26 – 19:26
- 3♃︎ Jupiter19:26 – 20:26
- 4♂︎ Mars20:26 – 21:26
- 5☉︎ Sun21:26 – 22:26
- 6♀︎ Venus22:26 – 23:25
- 7☿︎ Mercury23:25 – 00:25
- 8☽︎ Moon00:25 – 01:25
- 9♄︎ Saturn01:25 – 02:25
- 10♃︎ Jupiter02:25 – 03:25
- 11♂︎ Mars03:25 – 04:24
- 12☉︎ Sun04:24 – 05:24
Other cities · Indonesia
Questions
How are the planetary hours calculated in Surabaya?
On Thursday, 10 September 2026, the Sun rises at 05:25 and sets at 17:26: the day lasts 12h 02m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 05:24, lasts 11h 58m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Jupiter, from 05:25 to 06:25: 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.