Planetary hours
in Isfahan.
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 Monday, 21 December 2026: day of the Moon
- Sunrise
- 07:01
- Sunset
- 17:01
- Next sunrise
- 07:01
A day hour lasts 50 min; a night hour, 1h 10m. Local time (Asia/Tehran).
Day
- 1☽︎ Moon07:01 – 07:51
- 2♄︎ Saturn07:51 – 08:41
- 3♃︎ Jupiter08:41 – 09:31
- 4♂︎ Mars09:31 – 10:21
- 5☉︎ Sun10:21 – 11:11
- 6♀︎ Venus11:11 – 12:01
- 7☿︎ Mercury12:01 – 12:51
- 8☽︎ Moon12:51 – 13:41
- 9♄︎ Saturn13:41 – 14:31
- 10♃︎ Jupiter14:31 – 15:21
- 11♂︎ Mars15:21 – 16:11
- 12☉︎ Sun16:11 – 17:01
Night
- 1♀︎ Venus17:01 – 18:11
- 2☿︎ Mercury18:11 – 19:21
- 3☽︎ Moon19:21 – 20:31
- 4♄︎ Saturn20:31 – 21:41
- 5♃︎ Jupiter21:41 – 22:51
- 6♂︎ Mars22:51 – 00:01
- 7☉︎ Sun00:01 – 01:11
- 8♀︎ Venus01:11 – 02:21
- 9☿︎ Mercury02:21 – 03:31
- 10☽︎ Moon03:31 – 04:41
- 11♄︎ Saturn04:41 – 05:51
- 12♃︎ Jupiter05:51 – 07:01
Questions
How are the planetary hours calculated in Isfahan?
On Monday, 21 December 2026, the Sun rises at 07:01 and sets at 17:01: the day lasts 10h 00m, that is twelve day hours of 50 min. The night, until the next sunrise at 07:01, lasts 14h 00m: twelve night hours of 1h 10m.
Which planet rules the first hour that day?
The Moon, from 07:01 to 07:51: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.