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 Sunday, 13 December 2026: day of the Sun
- Sunrise
- 05:06
- Sunset
- 17:39
- Next sunrise
- 05:07
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Jakarta).
Day
- 1☉︎ Sun05:06 – 06:09
- 2♀︎ Venus06:09 – 07:12
- 3☿︎ Mercury07:12 – 08:14
- 4☽︎ Moon08:14 – 09:17
- 5♄︎ Saturn09:17 – 10:20
- 6♃︎ Jupiter10:20 – 11:23
- 7♂︎ Mars11:23 – 12:25
- 8☉︎ Sun12:25 – 13:28
- 9♀︎ Venus13:28 – 14:31
- 10☿︎ Mercury14:31 – 15:33
- 11☽︎ Moon15:33 – 16:36
- 12♄︎ Saturn16:36 – 17:39
Night
- 1♃︎ Jupiter17:39 – 18:36
- 2♂︎ Mars18:36 – 19:33
- 3☉︎ Sun19:33 – 20:31
- 4♀︎ Venus20:31 – 21:28
- 5☿︎ Mercury21:28 – 22:25
- 6☽︎ Moon22:25 – 23:23
- 7♄︎ Saturn23:23 – 00:20
- 8♃︎ Jupiter00:20 – 01:17
- 9♂︎ Mars01:17 – 02:15
- 10☉︎ Sun02:15 – 03:12
- 11♀︎ Venus03:12 – 04:09
- 12☿︎ Mercury04:09 – 05:07
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Questions
How are the planetary hours calculated in Surabaya?
On Sunday, 13 December 2026, the Sun rises at 05:06 and sets at 17:39: the day lasts 12h 33m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:07, lasts 11h 28m: twelve night hours of 57 min.
Which planet rules the first hour that day?
The Sun, from 05:06 to 06:09: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.