Planetary hours
in Riyadh.
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, 19 September 2026: day of Saturn
- Sunrise
- 05:40
- Sunset
- 17:52
- Next sunrise
- 05:40
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Asia/Riyadh).
Day
- 1♄︎ Saturn05:40 – 06:41
- 2♃︎ Jupiter06:41 – 07:42
- 3♂︎ Mars07:42 – 08:43
- 4☉︎ Sun08:43 – 09:44
- 5♀︎ Venus09:44 – 10:45
- 6☿︎ Mercury10:45 – 11:46
- 7☽︎ Moon11:46 – 12:47
- 8♄︎ Saturn12:47 – 13:48
- 9♃︎ Jupiter13:48 – 14:49
- 10♂︎ Mars14:49 – 15:50
- 11☉︎ Sun15:50 – 16:51
- 12♀︎ Venus16:51 – 17:52
Night
- 1☿︎ Mercury17:52 – 18:51
- 2☽︎ Moon18:51 – 19:50
- 3♄︎ Saturn19:50 – 20:49
- 4♃︎ Jupiter20:49 – 21:48
- 5♂︎ Mars21:48 – 22:47
- 6☉︎ Sun22:47 – 23:46
- 7♀︎ Venus23:46 – 00:45
- 8☿︎ Mercury00:45 – 01:44
- 9☽︎ Moon01:44 – 02:43
- 10♄︎ Saturn02:43 – 03:42
- 11♃︎ Jupiter03:42 – 04:41
- 12♂︎ Mars04:41 – 05:40
Other cities · Saudi Arabia
Questions
How are the planetary hours calculated in Riyadh?
On Saturday, 19 September 2026, the Sun rises at 05:40 and sets at 17:52: the day lasts 12h 12m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 05:40, lasts 11h 48m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Saturn, from 05:40 to 06:41: 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.