Planetary hours
in Bahía Blanca.
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, 31 May 2026: day of the Sun
- Sunrise
- 08:17
- Sunset
- 17:56
- Next sunrise
- 08:18
A day hour lasts 48 min; a night hour, 1h 12m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☉︎ Sun08:17 – 09:05
- 2♀︎ Venus09:05 – 09:53
- 3☿︎ Mercury09:53 – 10:42
- 4☽︎ Moon10:42 – 11:30
- 5♄︎ Saturn11:30 – 12:18
- 6♃︎ Jupiter12:18 – 13:06
- 7♂︎ Mars13:06 – 13:54
- 8☉︎ Sun13:54 – 14:43
- 9♀︎ Venus14:43 – 15:31
- 10☿︎ Mercury15:31 – 16:19
- 11☽︎ Moon16:19 – 17:07
- 12♄︎ Saturn17:07 – 17:56
Night
- 1♃︎ Jupiter17:56 – 19:07
- 2♂︎ Mars19:07 – 20:19
- 3☉︎ Sun20:19 – 21:31
- 4♀︎ Venus21:31 – 22:43
- 5☿︎ Mercury22:43 – 23:55
- 6☽︎ Moon23:55 – 01:07
- 7♄︎ Saturn01:07 – 02:18
- 8♃︎ Jupiter02:18 – 03:30
- 9♂︎ Mars03:30 – 04:42
- 10☉︎ Sun04:42 – 05:54
- 11♀︎ Venus05:54 – 07:06
- 12☿︎ Mercury07:06 – 08:18
Other cities · Argentina
Questions
How are the planetary hours calculated in Bahía Blanca?
On Sunday, 31 May 2026, the Sun rises at 08:17 and sets at 17:56: the day lasts 9h 39m, that is twelve day hours of 48 min. The night, until the next sunrise at 08:18, lasts 14h 22m: twelve night hours of 1h 12m.
Which planet rules the first hour that day?
The Sun, from 08:17 to 09:05: 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.