Summer Solstice 2024 Date And Time Usa. Daylight saving time ends at 2 a.m.  — the longest day of summer is the summer solstice, which marks the first day of astronomical summer.

 — find here dates and timings of different time zones.  — the summer solstice — the exact moment when earth’s north pole is most tilted towards the sun — happens at 4:51 p.m.