Summer and winter solstices

This year, the northern summer solstice falls on June 21 at 5:13 am EDT (June 21 at 9:13 UT).

Solstices occur simultaneously around the world, but their local times vary with time zones. 

Traditionally, summer and winter solstices helped mark the changing of the seasons. Today, meteorologists officially use temperature records instead to draw lines between the seasons.