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 Friday, 31 July 2026: day of Venus
- Sunrise
- 05:16
- Sunset
- 19:02
- Next sunrise
- 05:17
A day hour lasts 1h 09m; a night hour, 51 min. Local time (Asia/Tehran).
Day
- 1♀︎ Venus05:16 – 06:25
- 2☿︎ Mercury06:25 – 07:34
- 3☽︎ Moon07:34 – 08:43
- 4♄︎ Saturn08:43 – 09:51
- 5♃︎ Jupiter09:51 – 11:00
- 6♂︎ Mars11:00 – 12:09
- 7☉︎ Sun12:09 – 13:18
- 8♀︎ Venus13:18 – 14:27
- 9☿︎ Mercury14:27 – 15:36
- 10☽︎ Moon15:36 – 16:44
- 11♄︎ Saturn16:44 – 17:53
- 12♃︎ Jupiter17:53 – 19:02
Night
- 1♂︎ Mars19:02 – 19:53
- 2☉︎ Sun19:53 – 20:44
- 3♀︎ Venus20:44 – 21:36
- 4☿︎ Mercury21:36 – 22:27
- 5☽︎ Moon22:27 – 23:18
- 6♄︎ Saturn23:18 – 00:09
- 7♃︎ Jupiter00:09 – 01:01
- 8♂︎ Mars01:01 – 01:52
- 9☉︎ Sun01:52 – 02:43
- 10♀︎ Venus02:43 – 03:34
- 11☿︎ Mercury03:34 – 04:26
- 12☽︎ Moon04:26 – 05:17
Questions
How are the planetary hours calculated in Isfahan?
On Friday, 31 July 2026, the Sun rises at 05:16 and sets at 19:02: the day lasts 13h 46m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 05:17, lasts 10h 15m: twelve night hours of 51 min.
Which planet rules the first hour that day?
Venus, from 05:16 to 06:25: 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.