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, 21 October 2026: day of Mercury
- Sunrise
- 05:04
- Sunset
- 17:22
- Next sunrise
- 05:04
A day hour lasts 1h 01m; a night hour, 58 min. Local time (Asia/Jakarta).
Day
- 1☿︎ Mercury05:04 – 06:06
- 2☽︎ Moon06:06 – 07:07
- 3♄︎ Saturn07:07 – 08:09
- 4♃︎ Jupiter08:09 – 09:10
- 5♂︎ Mars09:10 – 10:12
- 6☉︎ Sun10:12 – 11:13
- 7♀︎ Venus11:13 – 12:15
- 8☿︎ Mercury12:15 – 13:16
- 9☽︎ Moon13:16 – 14:18
- 10♄︎ Saturn14:18 – 15:19
- 11♃︎ Jupiter15:19 – 16:21
- 12♂︎ Mars16:21 – 17:22
Night
- 1☉︎ Sun17:22 – 18:21
- 2♀︎ Venus18:21 – 19:19
- 3☿︎ Mercury19:19 – 20:18
- 4☽︎ Moon20:18 – 21:16
- 5♄︎ Saturn21:16 – 22:15
- 6♃︎ Jupiter22:15 – 23:13
- 7♂︎ Mars23:13 – 00:12
- 8☉︎ Sun00:12 – 01:10
- 9♀︎ Venus01:10 – 02:09
- 10☿︎ Mercury02:09 – 03:07
- 11☽︎ Moon03:07 – 04:05
- 12♄︎ Saturn04:05 – 05:04
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Questions
How are the planetary hours calculated in Surabaya?
On Wednesday, 21 October 2026, the Sun rises at 05:04 and sets at 17:22: the day lasts 12h 18m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:04, lasts 11h 42m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Mercury, from 05:04 to 06:06: 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.