This year, the northern summer solstice falls on June 21 at 11:54 a.m. ET. South of the Equator, this same moment marks the unofficial beginning of winter. Solstices occur at the same time around the world, but their local times vary with time zones. Solstices occur because Earth’s axis of rotation is tilted about 23.4 degrees relative… Read More What is the summer solstice? The answer might surprise you.