# Le Day Viaduct, Switzerland: what it is and when to go > Le Day Viaduct is a Rail viaduct (Viaduc du Day) in Switzerland (Vallorbe). Interests: Architecture. The best time to visit is December to March and May to October. In June there are 15 h 38 of daylight, and in December, 8 h 22. It has articles in 3 Wikipedias, so it is not one of the busiest places in Switzerland: one to enjoy at a calmer pace. 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/suiza/le-day-viaduct/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Rail viaduct · Architecture - **Local name:** Viaduc du Day - **Where:** Switzerland - **Best time:** December to March and May to October. - **Nearest airport:** GVA Geneva, 58 km as the crow flies - **Coordinates:** 46.72239, 6.39587 ## What it is and where Le Day Viaduct is a Rail viaduct (Viaduc du Day) in Switzerland (Vallorbe). It has articles in 3 Wikipedias, so it is not one of the busiest places in Switzerland: one to enjoy at a calmer pace. It is in [Vallorbe](https://kokai.app/en/paises/europa/suiza/vallorbe/), where this site lists 50 more places to see, 4.0 km from the centre. Its coordinates are 46.72239, 6.39587; the nearest main airport is Geneva International Airport (GVA, Geneva), 58 km as the crow flies. How to get around Switzerland (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/europa/suiza/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=46.722387%2C6.395872) - [Directions](https://www.google.com/maps/dir/?api=1&destination=46.722387%2C6.395872) It is one of the [Architecture](https://kokai.app/en/paises/europa/suiza/arquitectura/) places in Switzerland. 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 The best time to visit Le Day Viaduct is **December to March and May to October**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Best time | 8 h 45 | | February | Best time | 10 h 04 | | March | Best time | 11 h 36 | | April | Possible | 13 h 21 | | May | Best time | 14 h 49 | | June | Best time | 15 h 38 | | July | Best time | 15 h 18 | | August | Best time | 14 h 01 | | September | Best time | 12 h 19 | | October | Best time | 10 h 37 | | November | Possible | 9 h 07 | | December | Best time | 8 h 22 | In June there are 15 h 38 of daylight, and in December, 8 h 22. 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 Switzerland in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/europa/suiza/#cuando-ir). ## Before you go to Switzerland To enter Switzerland there are 7 things to sort out before you leave, starting with “Valid Spanish ID card (DNI) or passport”: they are all, with their deadlines, in [the Switzerland checklist](https://kokai.app/en/paises/europa/suiza/#antes-de-salir). Currency: Swiss franc (CHF); plugs: Type J · 230 V · 50 Hz (the European type C fits; the three-pin Schuko doesn't); emergencies: 112 · 117 police · 144 ambulance · 1414 air rescue (Rega). 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 - [Iron and Railway Museum](https://kokai.app/en/paises/europa/suiza/musee-du-fer-et-du-chemin-de-fer/): Museum in Vallorbe in the canton of Vaud, Switzerland · 1.6 km - [Via Cluny Le grand itinéraire](https://kokai.app/en/paises/europa/suiza/via-cluny-le-grand-itineraire/): Hiking · 1.8 km - [Via Cluny Etape 8](https://kokai.app/en/paises/europa/suiza/via-cluny-etape-8/): Hiking · 1.8 km - [Via Cluny France](https://kokai.app/en/paises/europa/suiza/via-cluny-france/): Hiking · 1.8 km - [Fort de Pré-Giroud](https://kokai.app/en/paises/europa/suiza/fort-de-pre-giroud/): Historical museum and artillery fort above the municipality of Vallorbe in the Vaud Jura, Switzerland · 1.9 km Distances are as the crow flies. Everything else is in [the Switzerland guide](https://kokai.app/en/paises/europa/suiza/). ## More in Switzerland: Architecture - [Kapellbrücke](https://kokai.app/en/paises/europa/suiza/puente-de-la-capilla/): historic wooden bridge over the Reuss River in the city of Lucerne, Switzerland - [Säntis](https://kokai.app/en/paises/europa/suiza/santis/): peak in northeastern Switzerland - [Zytglogge](https://kokai.app/en/paises/europa/suiza/torre-del-reloj/): medieval clock tower with astronomical clock and carillon in the city of Bern, Switzerland - [Uetliberg](https://kokai.app/en/paises/europa/suiza/uetliberg/): mountain in the Swiss plateau - [Three Countries Bridge](https://kokai.app/en/paises/europa/suiza/dreilanderbrucke/): bridge in France, Switzerland, and Germany - [Monte Verità](https://kokai.app/en/paises/europa/suiza/monte-verita/): colony on the hill Monescia near Ascona in Ticino, Switzerland Every Switzerland place under Architecture, each with its season, is on [its page](https://kokai.app/en/paises/europa/suiza/arquitectura/). ## Frequently asked questions ### What is Le Day Viaduct? It is a Rail viaduct (Viaduc du Day in the local language) in Switzerland. It has articles in 3 Wikipedias, so it is not one of the busiest places in Switzerland: one to enjoy at a calmer pace. ### When is the best time to visit Le Day Viaduct? December to March and May to October. In June there are 15 h 38 of daylight, and in December, 8 h 22. ### How do you get to Le Day Viaduct? The nearest main airport is Geneva International Airport (GVA), 58 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=46.722387%2C6.395872) opens the route on the map, and how to get around Switzerland is explained in [its country guide](https://kokai.app/en/paises/europa/suiza/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the Switzerland 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 [Iron and Railway Museum](https://kokai.app/en/paises/europa/suiza/musee-du-fer-et-du-chemin-de-fer/), [Via Cluny Le grand itinéraire](https://kokai.app/en/paises/europa/suiza/via-cluny-le-grand-itineraire/), [Via Cluny Etape 8](https://kokai.app/en/paises/europa/suiza/via-cluny-etape-8/). The rest is in [the Switzerland guide](https://kokai.app/en/paises/europa/suiza/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/1300051108), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q3556701), CC0. More about Le Day Viaduct on [Wikipedia](https://en.wikipedia.org/wiki/Le_Day_Viaduct). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).