# Porta ad Astra, Germany: what it is and when to go > Porta ad Astra is an observatory in Germany (Miltenberg). Interests: Stargazing. The best time to visit is December. In June there are 16 h 04 of daylight, and in December, 7 h 56. 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/alemania/porta-ad-astra/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Observatory · Stargazing - **Where:** Germany - **Best time:** December. - **Nearest airport:** FRA Frankfurt am Main, 54 km as the crow flies - **Coordinates:** 49.67754, 9.07402 ## What it is and where Porta ad Astra is an observatory in Germany (Miltenberg). Sternwarte It is in [Miltenberg](https://kokai.app/en/paises/europa/alemania/miltenberg/), where this site lists 65 more places to see, 13 km from the centre. Its coordinates are 49.67754, 9.07402; the nearest main airport is Frankfurt Main Airport (FRA, Frankfurt am Main), 54 km as the crow flies. How to get around Germany (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/europa/alemania/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=49.677535%2C9.074016) - [Directions](https://www.google.com/maps/dir/?api=1&destination=49.677535%2C9.074016) It is one of the [Stargazing](https://kokai.app/en/paises/europa/alemania/estrellas/) places in Germany. 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 Porta ad Astra is **December**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 8 h 22 | | February | Possible | 9 h 51 | | March | Possible | 11 h 33 | | April | Better not | 13 h 30 | | May | Better not | 15 h 09 | | June | Better not | 16 h 04 | | July | Better not | 15 h 41 | | August | Better not | 14 h 14 | | September | Better not | 12 h 21 | | October | Better not | 10 h 28 | | November | Possible | 8 h 47 | | December | Best time | 7 h 56 | In June there are 16 h 04 of daylight, and in December, 7 h 56. 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 Germany in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/europa/alemania/#cuando-ir). ## Before you go to Germany To enter Germany 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 Germany checklist](https://kokai.app/en/paises/europa/alemania/#antes-de-salir). Currency: Euro (EUR); plugs: Type C and F · 230 V · 50 Hz; emergencies: 112 · 110 police. 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 - [Jagdschloß Eulbach](https://kokai.app/en/paises/europa/alemania/jagdschloss-eulbach/): Cultural heritage monument in Würzberg, Hesse, Germany · 235 m - [Englischer Garten Eulbach](https://kokai.app/en/paises/europa/alemania/englischer-garten-eulbach/): With kids · Wildlife · 517 m - [Roter Buckel](https://kokai.app/en/paises/europa/alemania/roter-buckel/): Mountain in Germany · 3.9 km - [Kellerei Michelstadt](https://kokai.app/en/paises/europa/alemania/kellerei/): History · 5.0 km - [Erdbachhöhle bei Erbach](https://kokai.app/en/paises/europa/alemania/erdbacheinschlupf/): Protected area in the European Union defined by the habitats directive in Hessen, Germany · 5.2 km Distances are as the crow flies. Everything else is in [the Germany guide](https://kokai.app/en/paises/europa/alemania/). ## More in Germany: Stargazing - [Heidelberg-Königstuhl State Observatory](https://kokai.app/en/paises/europa/alemania/landessternwarte-konigstuhl/): astronomical observatory in Germany - [Hamburg Observatory](https://kokai.app/en/paises/europa/alemania/hamburger-sternwarte/): astronomical observatory - [Effelsberg 100-metre Radio Telescope](https://kokai.app/en/paises/europa/alemania/radioteleskop-effelsberg/): radio telescope in Germany - [Karl Schwarzschild Observatory](https://kokai.app/en/paises/europa/alemania/thuringer-landessternwarte-tautenburg/): Observatory - [GEO600](https://kokai.app/en/paises/europa/alemania/geo600/): gravitational wave detector in Germany - [Sonneberg Observatory](https://kokai.app/en/paises/europa/alemania/sternwarte-sonneberg/): Observatory Every Germany place under Stargazing, each with its season, is on [its page](https://kokai.app/en/paises/europa/alemania/estrellas/). ## Frequently asked questions ### What is Porta ad Astra? It is an observatory in Germany. ### When is the best time to visit Porta ad Astra? December. In June there are 16 h 04 of daylight, and in December, 7 h 56. ### How do you get to Porta ad Astra? The nearest main airport is Frankfurt Main Airport (FRA), 54 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=49.677535%2C9.074016) opens the route on the map, and how to get around Germany is explained in [its country guide](https://kokai.app/en/paises/europa/alemania/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the Germany 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 [Jagdschloß Eulbach](https://kokai.app/en/paises/europa/alemania/jagdschloss-eulbach/), [Englischer Garten Eulbach](https://kokai.app/en/paises/europa/alemania/englischer-garten-eulbach/), [Roter Buckel](https://kokai.app/en/paises/europa/alemania/roter-buckel/). The rest is in [the Germany guide](https://kokai.app/en/paises/europa/alemania/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/1460312000), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/), CC0. Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).