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, 29 May 2026: day of Venus
- Sunrise
- 04:57
- Sunset
- 19:04
- Next sunrise
- 04:57
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Asia/Tehran).
Day
- 1♀︎ Venus04:57 – 06:08
- 2☿︎ Mercury06:08 – 07:18
- 3☽︎ Moon07:18 – 08:29
- 4♄︎ Saturn08:29 – 09:39
- 5♃︎ Jupiter09:39 – 10:50
- 6♂︎ Mars10:50 – 12:00
- 7☉︎ Sun12:00 – 13:11
- 8♀︎ Venus13:11 – 14:21
- 9☿︎ Mercury14:21 – 15:32
- 10☽︎ Moon15:32 – 16:43
- 11♄︎ Saturn16:43 – 17:53
- 12♃︎ Jupiter17:53 – 19:04
Night
- 1♂︎ Mars19:04 – 19:53
- 2☉︎ Sun19:53 – 20:43
- 3♀︎ Venus20:43 – 21:32
- 4☿︎ Mercury21:32 – 22:21
- 5☽︎ Moon22:21 – 23:11
- 6♄︎ Saturn23:11 – 00:00
- 7♃︎ Jupiter00:00 – 00:50
- 8♂︎ Mars00:50 – 01:39
- 9☉︎ Sun01:39 – 02:28
- 10♀︎ Venus02:28 – 03:18
- 11☿︎ Mercury03:18 – 04:07
- 12☽︎ Moon04:07 – 04:57
Questions
How are the planetary hours calculated in Isfahan?
On Friday, 29 May 2026, the Sun rises at 04:57 and sets at 19:04: the day lasts 14h 07m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 04:57, lasts 9h 53m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Venus, from 04:57 to 06:08: 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.