Planetary
hours.
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.
In France
- Paris
- Marseille
- Lyon
- Toulouse
- Nice
- Nantes
- Marne La Vallée
- Strasbourg
- Bordeaux
- Montpellier
- Lille
- Rennes
- Reims
- Le Havre
- Cergy-Pontoise
- Saint-Étienne
- Toulon
- Angers
- Dijon
- Grenoble
- Nîmes
- Clermont-Ferrand
- Aix-en-Provence
- Saint-Quentin-en-Yvelines
- Brest
- Le Mans
- Amiens
- Tours
- Limoges
- Villeurbanne
- Besançon
- Metz
- Orléans
- Rouen
- Mulhouse
- Montreuil
- Perpignan
- Caen
- Boulogne-Billancourt
- Nancy
- Argenteuil
- Roubaix
- Tourcoing
- Saint-Denis
- Avignon
- Asnières-sur-Seine
- Nanterre
- Dunkirk
- Poitiers
- Versailles
- Courbevoie
- Créteil
- Pau
- Colombes
- Vitry-sur-Seine
- Aulnay-sous-Bois
- La Rochelle
- Champigny-sur-Marne
- Rueil-Malmaison
- Antibes
Around the world
- Shanghai
- Chongqing
- Chengdu
- Beijing
- Kinshasa
- Istanbul
- Lagos
- Ho Chi Minh City
- Lahore
- Mumbai
- São Paulo
- Mexico City
- Karachi
- Delhi
- Moscow
- Dhaka
- Séoul
- Tokyo
- Cairo
- Johannesburg
- London
- New York City
- Jakarta
- Bengaluru
- Hanoi
- Taipei
- Lima
- Bogotá
- Hong Kong
- Baghdad
- Tehran
- Hyderabad
- Rio de Janeiro
- Abidjan
- Sydney
- Singapore
- Melbourne
- Dar es Salaam
- Saint Petersburg
- Alexandria
- Bangkok
- Kano
- Santiago
- Cape Town
- Peshawar
- Jeddah
- Yangon
- Kabul
- Nairobi
- Giza
- Bamako
- Riyadh
- Brussels
- New Taipei City
- New Territories
- Chattogram
- Addis Ababa
- Los Angeles
- Faisalabad
- Dubaï
- Yokohama
- Casablanca
- Ibadan
- Ankara
- Berlin
- Durban
- Busan
- Madrid
- Pyongyang
- Bursa
- Quezon City
- Surabaya
- Incheon
- Caracas
- Kyiv
- İzmir
- Buenos Aires
- Taichung
- Toronto
- Quito
- Brisbane
- Luanda
- Osaka
- Kaohsiung
- Brooklyn
- Guayaquil
- Belo Horizonte
- Salvador
- Abuja
- Gazipur
- Chicago
- Bekasi
- Dakar
- Haiphong
- Mogadishu
- Kumasi
- Bandung
- Ouagadougou
- Cali
- Perth
- Daegu
- Algiers
- Baku
- Nagoya
- Rome
- Mashhad
- Kowloon
- Lubumbashi
- Lusaka
- Santo Domingo
- Lomé
- Havana
- Antwerp
- Pretoria
- Córdoba
- Mbuji-Mayi
- Aleppo
- Al Mawşil al Jadīdah
- La Paz
- Medellín
- Brazzaville
- Tashkent
- Almaty
- Khartoum
- Hamburg
- Accra
- Sanaa
- Conakry
- Tijuana
- Beirut
- Bucharest
- Camayenne
- Kakamega
- Omdurman
- Davao
- Iztapalapa
- Santa Cruz de la Sierra
- Abu Dhabi
- Sharjah
- Montréal
- Maracaibo
- Minsk
- Budapest
- Caloocan
- Warsaw
- Puebla
- Vienna
- Barcelona
- Mosul
- Kampala
Questions
What is a planetary hour?
One twelfth of the day (from sunrise to sunset) or of the night (from sunset to the next sunrise). Each hour carries a planet. A day hour is longer than a night hour in summer and shorter in winter; both last 60 minutes only at the equinoxes.
In what order do the planets follow each other?
In the Chaldean order, from slowest to fastest: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon, then Saturn again. The first hour of the day goes to the planet of the weekday: the Sun on Sunday, the Moon on Monday, Mars on Tuesday, Mercury on Wednesday, Jupiter on Thursday, Venus on Friday, Saturn on Saturday.
Why does the next day’s planet always land right?
Twenty-four hours make three full rounds of the seven planets, plus three steps: the next day’s first hour lands three planets further in the Chaldean order. From the Sun (Sunday), three steps lead to the Moon (Monday), then to Mars (Tuesday), and so on.
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.