At the spring equinox, if we observe it from the Ballon d’Alsace, the sun rises behind the Black Forest Belchen 70 km away
At the summer solstice, the sun rises in the northeast above the Markstein, in the direction of the Petit Ballon
At the autumnal equinox, if we observe it from the Ballon d’Alsace, the sun rises behind the summit of Schwarzwaldbelchen 70 km away.
About 40 days after the autumn equinox, beginning of the Celtic winter half-year. The three Celtic settlements Britzgyberg, Basel-Gasfabrik and Augusta Raurica are on the line of the sunrise.
The sun rises in the southeast behind the Tödi in the Glarus Alps, in between lies the Jura Belchen