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 Tuesday, 21 July 2026: day of Mars
- Sunrise
- 05:09
- Sunset
- 19:09
- Next sunrise
- 05:10
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Asia/Tehran).
Day
- 1♂︎ Mars05:09 – 06:19
- 2☉︎ Sun06:19 – 07:29
- 3♀︎ Venus07:29 – 08:39
- 4☿︎ Mercury08:39 – 09:49
- 5☽︎ Moon09:49 – 10:59
- 6♄︎ Saturn10:59 – 12:09
- 7♃︎ Jupiter12:09 – 13:19
- 8♂︎ Mars13:19 – 14:29
- 9☉︎ Sun14:29 – 15:39
- 10♀︎ Venus15:39 – 16:49
- 11☿︎ Mercury16:49 – 17:59
- 12☽︎ Moon17:59 – 19:09
Night
- 1♄︎ Saturn19:09 – 19:59
- 2♃︎ Jupiter19:59 – 20:49
- 3♂︎ Mars20:49 – 21:39
- 4☉︎ Sun21:39 – 22:29
- 5♀︎ Venus22:29 – 23:19
- 6☿︎ Mercury23:19 – 00:09
- 7☽︎ Moon00:09 – 01:00
- 8♄︎ Saturn01:00 – 01:50
- 9♃︎ Jupiter01:50 – 02:40
- 10♂︎ Mars02:40 – 03:30
- 11☉︎ Sun03:30 – 04:20
- 12♀︎ Venus04:20 – 05:10
Questions
How are the planetary hours calculated in Isfahan?
On Tuesday, 21 July 2026, the Sun rises at 05:09 and sets at 19:09: the day lasts 13h 59m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 05:10, lasts 10h 01m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Mars, from 05:09 to 06:19: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.