Planetary hours
in Istanbul.
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 Saturday, 13 December 2025: day of Saturn
- Sunrise
- 08:20
- Sunset
- 17:36
- Next sunrise
- 08:21
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Istanbul).
Day
- 1♄︎ Saturn08:20 – 09:06
- 2♃︎ Jupiter09:06 – 09:53
- 3♂︎ Mars09:53 – 10:39
- 4☉︎ Sun10:39 – 11:25
- 5♀︎ Venus11:25 – 12:12
- 6☿︎ Mercury12:12 – 12:58
- 7☽︎ Moon12:58 – 13:44
- 8♄︎ Saturn13:44 – 14:30
- 9♃︎ Jupiter14:30 – 15:17
- 10♂︎ Mars15:17 – 16:03
- 11☉︎ Sun16:03 – 16:49
- 12♀︎ Venus16:49 – 17:36
Night
- 1☿︎ Mercury17:36 – 18:49
- 2☽︎ Moon18:49 – 20:03
- 3♄︎ Saturn20:03 – 21:17
- 4♃︎ Jupiter21:17 – 22:31
- 5♂︎ Mars22:31 – 23:45
- 6☉︎ Sun23:45 – 00:58
- 7♀︎ Venus00:58 – 02:12
- 8☿︎ Mercury02:12 – 03:26
- 9☽︎ Moon03:26 – 04:40
- 10♄︎ Saturn04:40 – 05:53
- 11♃︎ Jupiter05:53 – 07:07
- 12♂︎ Mars07:07 – 08:21
Other cities · Türkiye
Questions
How are the planetary hours calculated in Istanbul?
On Saturday, 13 December 2025, the Sun rises at 08:20 and sets at 17:36: the day lasts 9h 16m, that is twelve day hours of 46 min. The night, until the next sunrise at 08:21, lasts 14h 45m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Saturn, from 08:20 to 09:06: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.