Summer officially begins Friday, June 20, at 10:41 p.m. Eastern time. That’s the precise moment of the summer solstice — making for the longest, brightest day of the year in the Northern Hemisphere.

The winter solstice marks the point when the Earth’s axial tilt is furthest away from the sun in your hemisphere.

Australia is set to observe the winter solstice for 2025 on June 21, marking the shortest day. Despite this, the coldest temperatures are expected in mid to late July due to seasonal lag, where oceans ...