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 January 2026: day of Venus
- Sunrise
- 05:16
- Sunset
- 17:48
- Next sunrise
- 05:17
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1♀︎ Venus05:16 – 06:19
- 2☿︎ Mercury06:19 – 07:22
- 3☽︎ Moon07:22 – 08:24
- 4♄︎ Saturn08:24 – 09:27
- 5♃︎ Jupiter09:27 – 10:30
- 6♂︎ Mars10:30 – 11:32
- 7☉︎ Sun11:32 – 12:35
- 8♀︎ Venus12:35 – 13:38
- 9☿︎ Mercury13:38 – 14:40
- 10☽︎ Moon14:40 – 15:43
- 11♄︎ Saturn15:43 – 16:46
- 12♃︎ Jupiter16:46 – 17:48
Night
- 1♂︎ Mars17:48 – 18:46
- 2☉︎ Sun18:46 – 19:43
- 3♀︎ Venus19:43 – 20:41
- 4☿︎ Mercury20:41 – 21:38
- 5☽︎ Moon21:38 – 22:35
- 6♄︎ Saturn22:35 – 23:33
- 7♃︎ Jupiter23:33 – 00:30
- 8♂︎ Mars00:30 – 01:27
- 9☉︎ Sun01:27 – 02:25
- 10♀︎ Venus02:25 – 03:22
- 11☿︎ Mercury03:22 – 04:19
- 12☽︎ Moon04:19 – 05:17
Other cities · Indonesia
Questions
How are the planetary hours calculated in Surabaya?
On Friday, 2 January 2026, the Sun rises at 05:16 and sets at 17:48: the day lasts 12h 32m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:17, lasts 11h 28m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Venus, from 05:16 to 06:19: 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.