Planetary hours
in Biên Hòa.
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
- 05:41
- Sunset
- 17:33
- Next sunrise
- 05:42
A day hour lasts 59 min; a night hour, 1h 01m. Local time (Asia/Ho_Chi_Minh).
Day
- 1☉︎ Sun05:41 – 06:41
- 2♀︎ Venus06:41 – 07:40
- 3☿︎ Mercury07:40 – 08:39
- 4☽︎ Moon08:39 – 09:39
- 5♄︎ Saturn09:39 – 10:38
- 6♃︎ Jupiter10:38 – 11:37
- 7♂︎ Mars11:37 – 12:37
- 8☉︎ Sun12:37 – 13:36
- 9♀︎ Venus13:36 – 14:35
- 10☿︎ Mercury14:35 – 15:35
- 11☽︎ Moon15:35 – 16:34
- 12♄︎ Saturn16:34 – 17:33
Night
- 1♃︎ Jupiter17:33 – 18:34
- 2♂︎ Mars18:34 – 19:35
- 3☉︎ Sun19:35 – 20:35
- 4♀︎ Venus20:35 – 21:36
- 5☿︎ Mercury21:36 – 22:37
- 6☽︎ Moon22:37 – 23:37
- 7♄︎ Saturn23:37 – 00:38
- 8♃︎ Jupiter00:38 – 01:39
- 9♂︎ Mars01:39 – 02:39
- 10☉︎ Sun02:39 – 03:40
- 11♀︎ Venus03:40 – 04:41
- 12☿︎ Mercury04:41 – 05:42
Other cities · Vietnam
Questions
How are the planetary hours calculated in Biên Hòa?
On Sunday, 18 October 2026, the Sun rises at 05:41 and sets at 17:33: the day lasts 11h 52m, that is twelve day hours of 59 min. The night, until the next sunrise at 05:42, lasts 12h 08m: twelve night hours of 1h 01m.
Which planet rules the first hour that day?
The Sun, from 05:41 to 06:41: 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.