Summer officially begins at 6:28 am today, Central Daylight Time.
Here’s some information on the summer solstice.
I know that on the summer solstice the sun is directly overhead at noon at the Tropic of Cancer, and we have the longest day of the year. Somewhere around here we also reach the point in our orbit when we are the farthest away from the sun. If that’s today as well, that’s pretty cool. (On the surface, it would make sense that it was, but I think, for some reason, this actually happens a couple of weeks later.)