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, 30 August 2026: day of the Sun
- Sunrise
- 05:31
- Sunset
- 17:28
- Next sunrise
- 05:30
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Asia/Jakarta).
Day
- 1☉︎ Sun05:31 – 06:30
- 2♀︎ Venus06:30 – 07:30
- 3☿︎ Mercury07:30 – 08:30
- 4☽︎ Moon08:30 – 09:30
- 5♄︎ Saturn09:30 – 10:29
- 6♃︎ Jupiter10:29 – 11:29
- 7♂︎ Mars11:29 – 12:29
- 8☉︎ Sun12:29 – 13:29
- 9♀︎ Venus13:29 – 14:29
- 10☿︎ Mercury14:29 – 15:28
- 11☽︎ Moon15:28 – 16:28
- 12♄︎ Saturn16:28 – 17:28
Night
- 1♃︎ Jupiter17:28 – 18:28
- 2♂︎ Mars18:28 – 19:28
- 3☉︎ Sun19:28 – 20:28
- 4♀︎ Venus20:28 – 21:29
- 5☿︎ Mercury21:29 – 22:29
- 6☽︎ Moon22:29 – 23:29
- 7♄︎ Saturn23:29 – 00:29
- 8♃︎ Jupiter00:29 – 01:29
- 9♂︎ Mars01:29 – 02:30
- 10☉︎ Sun02:30 – 03:30
- 11♀︎ Venus03:30 – 04:30
- 12☿︎ Mercury04:30 – 05:30
Other cities · Indonesia
Questions
How are the planetary hours calculated in Surabaya?
On Sunday, 30 August 2026, the Sun rises at 05:31 and sets at 17:28: the day lasts 11h 57m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 05:30, lasts 12h 02m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
The Sun, from 05:31 to 06:30: 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.