Summer Solstice: Everything You Need to Know

Summer solstice: marks start of summer, longest day. Earth's tilt causes it. 

Northern Hemisphere: most daylight, sun's path farthest north. 

Southern Hemisphere: winter solstice, shortest day. 

Solstices are astronomical; meteorological seasons based on temperature. 

Summer: June, July, August, mid-September (Northern Hemisphere). 

Equinoxes: equal day-night length, March and September. 

Earth's tilted axis changes sun's path, sunrise, sunset positions. 

Summer solstice: sun's northernmost point, stable path temporarily. 

This summer's best sunglasses to buy based on your zodiac sign