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 Tuesday, 21 July 2026: day of Mars
- Sunrise
- 05:42
- Sunset
- 17:28
- Next sunrise
- 05:42
A day hour lasts 59 min; a night hour, 1h 01m. Local time (Asia/Jakarta).
Day
- 1♂︎ Mars05:42 – 06:41
- 2☉︎ Sun06:41 – 07:40
- 3♀︎ Venus07:40 – 08:39
- 4☿︎ Mercury08:39 – 09:37
- 5☽︎ Moon09:37 – 10:36
- 6♄︎ Saturn10:36 – 11:35
- 7♃︎ Jupiter11:35 – 12:34
- 8♂︎ Mars12:34 – 13:33
- 9☉︎ Sun13:33 – 14:31
- 10♀︎ Venus14:31 – 15:30
- 11☿︎ Mercury15:30 – 16:29
- 12☽︎ Moon16:29 – 17:28
Night
- 1♄︎ Saturn17:28 – 18:29
- 2♃︎ Jupiter18:29 – 19:30
- 3♂︎ Mars19:30 – 20:31
- 4☉︎ Sun20:31 – 21:33
- 5♀︎ Venus21:33 – 22:34
- 6☿︎ Mercury22:34 – 23:35
- 7☽︎ Moon23:35 – 00:36
- 8♄︎ Saturn00:36 – 01:37
- 9♃︎ Jupiter01:37 – 02:39
- 10♂︎ Mars02:39 – 03:40
- 11☉︎ Sun03:40 – 04:41
- 12♀︎ Venus04:41 – 05:42
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Questions
How are the planetary hours calculated in Surabaya?
On Tuesday, 21 July 2026, the Sun rises at 05:42 and sets at 17:28: the day lasts 11h 45m, that is twelve day hours of 59 min. The night, until the next sunrise at 05:42, lasts 12h 15m: twelve night hours of 1h 01m.
Which planet rules the first hour that day?
Mars, from 05:42 to 06:41: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.