# Centre d'Astronomie Jean-Marc Salomon, France: what it is and when to go > Centre d'Astronomie Jean-Marc Salomon is an observatory in France (Buthiers). Interests: Stargazing. The best time to visit is November to March. In June there are 15 h 51 of daylight, and in December, 8 h 09. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/europa/francia/centre-d-astronomie-jean-marc-salomon/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Observatory · Stargazing - **Where:** France · Rue des Roches 73, 77760, Buthiers - **You can go:** November to March. - **Nearest airport:** ORY Paris (Orly, Val-de-Marne), 49 km as the crow flies - **Website:** [planete-sciences.org](https://www.planete-sciences.org/astro/centre-d-astronomie/presentation) - **Run by:** Planète Sciences & Île de Loisir deButhiers - **Coordinates:** 48.29179, 2.43813 ## What it is and where Centre d'Astronomie Jean-Marc Salomon is an observatory in France (Buthiers). It is in [Buthiers](https://kokai.app/en/paises/europa/francia/buthiers/), where this site lists 20 more places to see, 2 m from the centre. Its coordinates are 48.29179, 2.43813; the nearest main airport is Paris-Orly Airport (ORY, Paris (Orly, Val-de-Marne)), 49 km as the crow flies. How to get around France (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/europa/francia/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=48.29179%2C2.438126) - [Directions](https://www.google.com/maps/dir/?api=1&destination=48.29179%2C2.438126) - **Run by:** Planète Sciences & Île de Loisir deButhiers It is one of the [Stargazing](https://kokai.app/en/paises/europa/francia/estrellas/) places in France. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go Months when you can visit Centre d'Astronomie Jean-Marc Salomon: **November to March**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 8 h 33 | | February | Possible | 9 h 57 | | March | Possible | 11 h 35 | | April | Better not | 13 h 26 | | May | Better not | 14 h 59 | | June | Better not | 15 h 51 | | July | Better not | 15 h 30 | | August | Better not | 14 h 08 | | September | Better not | 12 h 20 | | October | Better not | 10 h 33 | | November | Possible | 8 h 57 | | December | Possible | 8 h 09 | In June there are 15 h 51 of daylight, and in December, 8 h 09. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. When to go to France in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/europa/francia/#cuando-ir). ## Before you go to France To enter France there are 6 things to sort out before you leave, starting with “Valid ID card (DNI) or passport”: they are all, with their deadlines, in [the France checklist](https://kokai.app/en/paises/europa/francia/#antes-de-salir). Currency: Euro (EUR); plugs: Type C and E · 230 V · 50 Hz; emergencies: 112 · 15 ambulance (SAMU) · 17 police · 18 fire brigade. In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [Dolmen de la Roche aux Loups](https://kokai.app/en/paises/europa/francia/dolmen-dit-la-roche-aux-loups/): Archaeological site · 2.3 km - [Château d'Augerville](https://kokai.app/en/paises/europa/francia/chateau-d-augerville/): Historic site in Loiret, France · 4.5 km - [Pierre de l'Armoire](https://kokai.app/en/paises/europa/francia/dolmen-dit-la-pierre-l-armoire/): Dolmen in Rumont, France · 5.3 km - [Grotte de Prinvaux (Boigneville)](https://kokai.app/en/paises/europa/francia/grotte-de-prinvaux/): Cave in France · 6.1 km - [méridienne d'Orveau-Bellesauve](https://kokai.app/en/paises/europa/francia/obelisque-astronomique/): Obelisk in Orveau-Bellesauve, France · 7.5 km Distances are as the crow flies. Everything else is in [the France guide](https://kokai.app/en/paises/europa/francia/). ## More in France: Stargazing - [Paris Observatory](https://kokai.app/en/paises/europa/francia/observatorio-de-paris/): foremost astronomical observatory of France - [University of Bordeaux](https://kokai.app/en/paises/europa/francia/observatoire-de-bordeaux/): university in France - [Observatory of Strasbourg](https://kokai.app/en/paises/europa/francia/observatoire-astronomique-de-strasbourg/): astronomical observatory in France - [List of astronomical observatories](https://kokai.app/en/paises/europa/francia/d51-plateau-astronomique-de-la-couronne-palc/): Wikimedia list article - [Pises Observatory](https://kokai.app/en/paises/europa/francia/observatoire-des-pises/): astronomical observatory in France - [Lyon Observatory](https://kokai.app/en/paises/europa/francia/observatoire-de-lyon/): school in France Every France place under Stargazing, each with its season, is on [its page](https://kokai.app/en/paises/europa/francia/estrellas/). ## Frequently asked questions ### What is Centre d'Astronomie Jean-Marc Salomon? It is an observatory in France. ### When is the best time to visit Centre d'Astronomie Jean-Marc Salomon? November to March. In June there are 15 h 51 of daylight, and in December, 8 h 09. ### How do you get to Centre d'Astronomie Jean-Marc Salomon? The nearest main airport is Paris-Orly Airport (ORY), 49 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=48.29179%2C2.438126) opens the route on the map, and how to get around France is explained in [its country guide](https://kokai.app/en/paises/europa/francia/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the France map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [Dolmen de la Roche aux Loups](https://kokai.app/en/paises/europa/francia/dolmen-dit-la-roche-aux-loups/), [Château d'Augerville](https://kokai.app/en/paises/europa/francia/chateau-d-augerville/), [Pierre de l'Armoire](https://kokai.app/en/paises/europa/francia/dolmen-dit-la-pierre-l-armoire/). The rest is in [the France guide](https://kokai.app/en/paises/europa/francia/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/197549198), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/), CC0. More about Centre d'Astronomie Jean-Marc Salomon on [Wikipedia](https://fr.wikipedia.org/wiki/Observatoire_de_Buthiers). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).