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, 20 September 2026: day of the Sun
- Sunrise
- 05:19
- Sunset
- 17:25
- Next sunrise
- 05:19
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Asia/Jakarta).
Day
- 1☉︎ Sun05:19 – 06:20
- 2♀︎ Venus06:20 – 07:20
- 3☿︎ Mercury07:20 – 08:21
- 4☽︎ Moon08:21 – 09:21
- 5♄︎ Saturn09:21 – 10:22
- 6♃︎ Jupiter10:22 – 11:22
- 7♂︎ Mars11:22 – 12:23
- 8☉︎ Sun12:23 – 13:23
- 9♀︎ Venus13:23 – 14:23
- 10☿︎ Mercury14:23 – 15:24
- 11☽︎ Moon15:24 – 16:24
- 12♄︎ Saturn16:24 – 17:25
Night
- 1♃︎ Jupiter17:25 – 18:24
- 2♂︎ Mars18:24 – 19:24
- 3☉︎ Sun19:24 – 20:23
- 4♀︎ Venus20:23 – 21:23
- 5☿︎ Mercury21:23 – 22:22
- 6☽︎ Moon22:22 – 23:22
- 7♄︎ Saturn23:22 – 00:21
- 8♃︎ Jupiter00:21 – 01:21
- 9♂︎ Mars01:21 – 02:20
- 10☉︎ Sun02:20 – 03:20
- 11♀︎ Venus03:20 – 04:19
- 12☿︎ Mercury04:19 – 05:19
Other cities · Indonesia
Questions
How are the planetary hours calculated in Surabaya?
On Sunday, 20 September 2026, the Sun rises at 05:19 and sets at 17:25: the day lasts 12h 05m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 05:19, lasts 11h 54m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
The Sun, from 05:19 to 06:20: 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.