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 Sunday, 18 October 2026: day of the Sun
- Sunrise
- 06:09
- Sunset
- 17:27
- Next sunrise
- 06:10
A day hour lasts 56 min; a night hour, 1h 04m. Local time (Asia/Tehran).
Day
- 1☉︎ Sun06:09 – 07:05
- 2♀︎ Venus07:05 – 08:02
- 3☿︎ Mercury08:02 – 08:58
- 4☽︎ Moon08:58 – 09:55
- 5♄︎ Saturn09:55 – 10:51
- 6♃︎ Jupiter10:51 – 11:48
- 7♂︎ Mars11:48 – 12:44
- 8☉︎ Sun12:44 – 13:41
- 9♀︎ Venus13:41 – 14:37
- 10☿︎ Mercury14:37 – 15:34
- 11☽︎ Moon15:34 – 16:30
- 12♄︎ Saturn16:30 – 17:27
Night
- 1♃︎ Jupiter17:27 – 18:30
- 2♂︎ Mars18:30 – 19:34
- 3☉︎ Sun19:34 – 20:37
- 4♀︎ Venus20:37 – 21:41
- 5☿︎ Mercury21:41 – 22:45
- 6☽︎ Moon22:45 – 23:48
- 7♄︎ Saturn23:48 – 00:52
- 8♃︎ Jupiter00:52 – 01:55
- 9♂︎ Mars01:55 – 02:59
- 10☉︎ Sun02:59 – 04:02
- 11♀︎ Venus04:02 – 05:06
- 12☿︎ Mercury05:06 – 06:10
Questions
How are the planetary hours calculated in Isfahan?
On Sunday, 18 October 2026, the Sun rises at 06:09 and sets at 17:27: the day lasts 11h 18m, that is twelve day hours of 56 min. The night, until the next sunrise at 06:10, lasts 12h 43m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
The Sun, from 06:09 to 07:05: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.