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 Friday, 16 October 2026: day of Venus
- Sunrise
- 05:51
- Sunset
- 17:25
- Next sunrise
- 05:51
A day hour lasts 58 min; a night hour, 1h 02m. Local time (Asia/Riyadh).
Day
- 1♀︎ Venus05:51 – 06:49
- 2☿︎ Mercury06:49 – 07:47
- 3☽︎ Moon07:47 – 08:44
- 4♄︎ Saturn08:44 – 09:42
- 5♃︎ Jupiter09:42 – 10:40
- 6♂︎ Mars10:40 – 11:38
- 7☉︎ Sun11:38 – 12:36
- 8♀︎ Venus12:36 – 13:34
- 9☿︎ Mercury13:34 – 14:32
- 10☽︎ Moon14:32 – 15:29
- 11♄︎ Saturn15:29 – 16:27
- 12♃︎ Jupiter16:27 – 17:25
Night
- 1♂︎ Mars17:25 – 18:27
- 2☉︎ Sun18:27 – 19:29
- 3♀︎ Venus19:29 – 20:32
- 4☿︎ Mercury20:32 – 21:34
- 5☽︎ Moon21:34 – 22:36
- 6♄︎ Saturn22:36 – 23:38
- 7♃︎ Jupiter23:38 – 00:40
- 8♂︎ Mars00:40 – 01:43
- 9☉︎ Sun01:43 – 02:45
- 10♀︎ Venus02:45 – 03:47
- 11☿︎ Mercury03:47 – 04:49
- 12☽︎ Moon04:49 – 05:51
Other cities · Saudi Arabia
Questions
How are the planetary hours calculated in Riyadh?
On Friday, 16 October 2026, the Sun rises at 05:51 and sets at 17:25: the day lasts 11h 34m, that is twelve day hours of 58 min. The night, until the next sunrise at 05:51, lasts 12h 26m: twelve night hours of 1h 02m.
Which planet rules the first hour that day?
Venus, from 05:51 to 06:49: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.