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 Friday, 21 August 2026: day of Venus
- Sunrise
- 07:47
- Sunset
- 18:37
- Next sunrise
- 07:45
A day hour lasts 54 min; a night hour, 1h 06m. Local time (America/Argentina/Buenos_Aires).
Day
- 1♀︎ Venus07:47 – 08:41
- 2☿︎ Mercury08:41 – 09:35
- 3☽︎ Moon09:35 – 10:29
- 4♄︎ Saturn10:29 – 11:24
- 5♃︎ Jupiter11:24 – 12:18
- 6♂︎ Mars12:18 – 13:12
- 7☉︎ Sun13:12 – 14:06
- 8♀︎ Venus14:06 – 15:00
- 9☿︎ Mercury15:00 – 15:55
- 10☽︎ Moon15:55 – 16:49
- 11♄︎ Saturn16:49 – 17:43
- 12♃︎ Jupiter17:43 – 18:37
Night
- 1♂︎ Mars18:37 – 19:43
- 2☉︎ Sun19:43 – 20:49
- 3♀︎ Venus20:49 – 21:54
- 4☿︎ Mercury21:54 – 23:00
- 5☽︎ Moon23:00 – 00:06
- 6♄︎ Saturn00:06 – 01:11
- 7♃︎ Jupiter01:11 – 02:17
- 8♂︎ Mars02:17 – 03:23
- 9☉︎ Sun03:23 – 04:28
- 10♀︎ Venus04:28 – 05:34
- 11☿︎ Mercury05:34 – 06:40
- 12☽︎ Moon06:40 – 07:45
Other cities · Argentina
Questions
How are the planetary hours calculated in Bahía Blanca?
On Friday, 21 August 2026, the Sun rises at 07:47 and sets at 18:37: the day lasts 10h 51m, that is twelve day hours of 54 min. The night, until the next sunrise at 07:45, lasts 13h 08m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Venus, from 07:47 to 08:41: 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.