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