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 Wednesday, 7 October 2026: day of Mercury
- Sunrise
- 05:10
- Sunset
- 17:23
- Next sunrise
- 05:10
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1☿︎ Mercury05:10 – 06:11
- 2☽︎ Moon06:11 – 07:12
- 3♄︎ Saturn07:12 – 08:13
- 4♃︎ Jupiter08:13 – 09:14
- 5♂︎ Mars09:14 – 10:15
- 6☉︎ Sun10:15 – 11:16
- 7♀︎ Venus11:16 – 12:17
- 8☿︎ Mercury12:17 – 13:18
- 9☽︎ Moon13:18 – 14:20
- 10♄︎ Saturn14:20 – 15:21
- 11♃︎ Jupiter15:21 – 16:22
- 12♂︎ Mars16:22 – 17:23
Night
- 1☉︎ Sun17:23 – 18:22
- 2♀︎ Venus18:22 – 19:20
- 3☿︎ Mercury19:20 – 20:19
- 4☽︎ Moon20:19 – 21:18
- 5♄︎ Saturn21:18 – 22:17
- 6♃︎ Jupiter22:17 – 23:16
- 7♂︎ Mars23:16 – 00:15
- 8☉︎ Sun00:15 – 01:14
- 9♀︎ Venus01:14 – 02:13
- 10☿︎ Mercury02:13 – 03:12
- 11☽︎ Moon03:12 – 04:11
- 12♄︎ Saturn04:11 – 05:10
Other cities · Indonesia
Questions
How are the planetary hours calculated in Surabaya?
On Wednesday, 7 October 2026, the Sun rises at 05:10 and sets at 17:23: the day lasts 12h 12m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:10, lasts 11h 47m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Mercury, from 05:10 to 06:11: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.