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 Thursday, 18 June 2026: day of Jupiter
- Sunrise
- 05:04
- Sunset
- 18:44
- Next sunrise
- 05:04
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Asia/Riyadh).
Day
- 1♃︎ Jupiter05:04 – 06:12
- 2♂︎ Mars06:12 – 07:20
- 3☉︎ Sun07:20 – 08:29
- 4♀︎ Venus08:29 – 09:37
- 5☿︎ Mercury09:37 – 10:45
- 6☽︎ Moon10:45 – 11:54
- 7♄︎ Saturn11:54 – 13:02
- 8♃︎ Jupiter13:02 – 14:10
- 9♂︎ Mars14:10 – 15:19
- 10☉︎ Sun15:19 – 16:27
- 11♀︎ Venus16:27 – 17:35
- 12☿︎ Mercury17:35 – 18:44
Night
- 1☽︎ Moon18:44 – 19:36
- 2♄︎ Saturn19:36 – 20:27
- 3♃︎ Jupiter20:27 – 21:19
- 4♂︎ Mars21:19 – 22:11
- 5☉︎ Sun22:11 – 23:02
- 6♀︎ Venus23:02 – 23:54
- 7☿︎ Mercury23:54 – 00:46
- 8☽︎ Moon00:46 – 01:37
- 9♄︎ Saturn01:37 – 02:29
- 10♃︎ Jupiter02:29 – 03:21
- 11♂︎ Mars03:21 – 04:12
- 12☉︎ Sun04:12 – 05:04
Other cities · Saudi Arabia
Questions
How are the planetary hours calculated in Riyadh?
On Thursday, 18 June 2026, the Sun rises at 05:04 and sets at 18:44: the day lasts 13h 40m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 05:04, lasts 10h 20m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Jupiter, from 05:04 to 06:12: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.