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 Wednesday, 12 August 2026: day of Mercury
- Sunrise
- 07:58
- Sunset
- 18:29
- Next sunrise
- 07:57
A day hour lasts 53 min; a night hour, 1h 07m. Local time (America/Argentina/Buenos_Aires).
Day
- 1☿︎ Mercury07:58 – 08:51
- 2☽︎ Moon08:51 – 09:44
- 3♄︎ Saturn09:44 – 10:36
- 4♃︎ Jupiter10:36 – 11:29
- 5♂︎ Mars11:29 – 12:21
- 6☉︎ Sun12:21 – 13:14
- 7♀︎ Venus13:14 – 14:06
- 8☿︎ Mercury14:06 – 14:59
- 9☽︎ Moon14:59 – 15:52
- 10♄︎ Saturn15:52 – 16:44
- 11♃︎ Jupiter16:44 – 17:37
- 12♂︎ Mars17:37 – 18:29
Night
- 1☉︎ Sun18:29 – 19:37
- 2♀︎ Venus19:37 – 20:44
- 3☿︎ Mercury20:44 – 21:51
- 4☽︎ Moon21:51 – 22:59
- 5♄︎ Saturn22:59 – 00:06
- 6♃︎ Jupiter00:06 – 01:13
- 7♂︎ Mars01:13 – 02:21
- 8☉︎ Sun02:21 – 03:28
- 9♀︎ Venus03:28 – 04:35
- 10☿︎ Mercury04:35 – 05:42
- 11☽︎ Moon05:42 – 06:50
- 12♄︎ Saturn06:50 – 07:57
Other cities · Argentina
Questions
How are the planetary hours calculated in Bahía Blanca?
On Wednesday, 12 August 2026, the Sun rises at 07:58 and sets at 18:29: the day lasts 10h 31m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:57, lasts 13h 28m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Mercury, from 07:58 to 08:51: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.