Wednesday at 12:24 a.m. Eastern Time marks the summer solstice. The Northern Hemisphere will dip toward the sun, basking in its warmth for longer than at any other time. The solstice occurs because the Earth spins on a tilted axis.
Video of Summer Solstice
In 2013, motion and orbit of the Moon and the Sun and the Earth (astronomy teaching materials) by AstroSimulator (See from 2:45)
1) Why do we have a summer solstice, anyway?
Summer Solstice is when the northern hemosphere of the Earth is most inclined towards the sun and that is why we get the most daylight of the year. Also shows the area around the North Pole that will see 24 houers of day on the first day of summer because of the Earth’s 23.5 degree tilt.
Okay, most people know this one. Earth orbits around the sun on a tilted axis (probably because our planet collided with some other massive object billions of years ago, back when it was still being formed).
So between March and September, Earth’s Northern Hemisphere gets more exposure to direct sunlight over the course of a day. The rest of the year, the Southern Hemisphere gets more. It’s the reason for the seasons:
2) How many hours of sunlight will I get on Tuesday?