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 Tuesday, 4 August 2026: day of Mars
- Sunrise
- 05:41
- Sunset
- 18:16
- Next sunrise
- 05:41
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Asia/Ho_Chi_Minh).
Day
- 1♂︎ Mars05:41 – 06:44
- 2☉︎ Sun06:44 – 07:47
- 3♀︎ Venus07:47 – 08:50
- 4☿︎ Mercury08:50 – 09:53
- 5☽︎ Moon09:53 – 10:55
- 6♄︎ Saturn10:55 – 11:58
- 7♃︎ Jupiter11:58 – 13:01
- 8♂︎ Mars13:01 – 14:04
- 9☉︎ Sun14:04 – 15:07
- 10♀︎ Venus15:07 – 16:10
- 11☿︎ Mercury16:10 – 17:13
- 12☽︎ Moon17:13 – 18:16
Night
- 1♄︎ Saturn18:16 – 19:13
- 2♃︎ Jupiter19:13 – 20:10
- 3♂︎ Mars20:10 – 21:07
- 4☉︎ Sun21:07 – 22:04
- 5♀︎ Venus22:04 – 23:01
- 6☿︎ Mercury23:01 – 23:58
- 7☽︎ Moon23:58 – 00:56
- 8♄︎ Saturn00:56 – 01:53
- 9♃︎ Jupiter01:53 – 02:50
- 10♂︎ Mars02:50 – 03:47
- 11☉︎ Sun03:47 – 04:44
- 12♀︎ Venus04:44 – 05:41
Other cities · Vietnam
Questions
How are the planetary hours calculated in Biên Hòa?
On Tuesday, 4 August 2026, the Sun rises at 05:41 and sets at 18:16: the day lasts 12h 35m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 05:41, lasts 11h 26m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mars, from 05:41 to 06:44: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.