When Is The Longest Night Of The Year 2024. On this date, there will be the fewest hours of daylight in the entire year as it’s when the winter solstice occurs. The longest day of 2024 fell on june 21, when the summer solstice occurred.

In 2024, the december solstice falls at 9:21 utc on december 21 (3:21 a.m. For that hemisphere, the winter solstice is the day with the shortest period of daylight and longest night of the year, and when the sun is at its lowest daily maximum elevation in the sky.