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, 4 October 2026: day of the Sun
- Sunrise
- 05:12
- Sunset
- 17:23
- Next sunrise
- 05:11
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Jakarta).
Day
- 1☉︎ Sun05:12 – 06:13
- 2♀︎ Venus06:13 – 07:14
- 3☿︎ Mercury07:14 – 08:15
- 4☽︎ Moon08:15 – 09:16
- 5♄︎ Saturn09:16 – 10:16
- 6♃︎ Jupiter10:16 – 11:17
- 7♂︎ Mars11:17 – 12:18
- 8☉︎ Sun12:18 – 13:19
- 9♀︎ Venus13:19 – 14:20
- 10☿︎ Mercury14:20 – 15:21
- 11☽︎ Moon15:21 – 16:22
- 12♄︎ Saturn16:22 – 17:23
Night
- 1♃︎ Jupiter17:23 – 18:22
- 2♂︎ Mars18:22 – 19:21
- 3☉︎ Sun19:21 – 20:20
- 4♀︎ Venus20:20 – 21:19
- 5☿︎ Mercury21:19 – 22:18
- 6☽︎ Moon22:18 – 23:17
- 7♄︎ Saturn23:17 – 00:16
- 8♃︎ Jupiter00:16 – 01:15
- 9♂︎ Mars01:15 – 02:14
- 10☉︎ Sun02:14 – 03:13
- 11♀︎ Venus03:13 – 04:12
- 12☿︎ Mercury04:12 – 05:11
Other cities · Indonesia
Questions
How are the planetary hours calculated in Surabaya?
On Sunday, 4 October 2026, the Sun rises at 05:12 and sets at 17:23: the day lasts 12h 11m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:11, lasts 11h 48m: twelve night hours of 59 min.
Which planet rules the first hour that day?
The Sun, from 05:12 to 06:13: 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.