Longest And Shortest Day Of The Year 2024 Europe. The length of the school day varies significantly across countries, ranging from 4 to 9.5 hours. The 2024 december solstice takes place on december 21, at 9:21 utc.

The 2024 december solstice takes place on december 21, at 9:21 utc. The summer solstice is the first day of astronomical summer, although the more logical metrological summer begins.