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, 23 September 2026: day of Mercury
- Sunrise
- 05:18
- Sunset
- 17:24
- Next sunrise
- 05:17
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1☿︎ Mercury05:18 – 06:18
- 2☽︎ Moon06:18 – 07:19
- 3♄︎ Saturn07:19 – 08:19
- 4♃︎ Jupiter08:19 – 09:20
- 5♂︎ Mars09:20 – 10:20
- 6☉︎ Sun10:20 – 11:21
- 7♀︎ Venus11:21 – 12:22
- 8☿︎ Mercury12:22 – 13:22
- 9☽︎ Moon13:22 – 14:23
- 10♄︎ Saturn14:23 – 15:23
- 11♃︎ Jupiter15:23 – 16:24
- 12♂︎ Mars16:24 – 17:24
Night
- 1☉︎ Sun17:24 – 18:24
- 2♀︎ Venus18:24 – 19:23
- 3☿︎ Mercury19:23 – 20:23
- 4☽︎ Moon20:23 – 21:22
- 5♄︎ Saturn21:22 – 22:21
- 6♃︎ Jupiter22:21 – 23:21
- 7♂︎ Mars23:21 – 00:20
- 8☉︎ Sun00:20 – 01:20
- 9♀︎ Venus01:20 – 02:19
- 10☿︎ Mercury02:19 – 03:18
- 11☽︎ Moon03:18 – 04:18
- 12♄︎ Saturn04:18 – 05:17
Other cities · Indonesia
Questions
How are the planetary hours calculated in Surabaya?
On Wednesday, 23 September 2026, the Sun rises at 05:18 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 05:17, lasts 11h 53m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Mercury, from 05:18 to 06:18: 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.