Solstice 2024 Usa. It marks the northern hemisphere’s shortest day (first day of winter) and southern hemisphere’s longest day. The summer solstice — the exact moment when earth’s north pole is most tilted towards the sun — happens at 4:51 p.m.

What is the summer solstice, and when does it happen? It’ll be the longest day of the year north of the equator, and it is the.