The June solstice happened just now at 05:04 UTC / 01:04 am EDT. For me, it’s the start of summer and for some of you it’s the winter solstice.
One of the best explanations and some of the traditions around events like the solstice is at timeanddate.com.
I usually go for a moring walk to watch the sunrise on the “summer solstice” and I will be again. I even get the day off so I’ll find something fun to do.