When will the next summer solstice and a full moon coincide? What day?
What day will the summer solstice and full moon coincide? As far as I know the next time will be in 2016. I would like to know what day.
You might want to think about Googling for this kind of data for yourself in future.
http://www.almanac.com/content/full-moon-winter-solstice Last occurred in 1986.According to the article, it occurs approximately every 19yrs.
The Summer Solstice in 2016 will occur at 22:34 UT on the 20th June, and the full moon will occur at 11:02 UT on that day (but since they are 12 hours apart that won't be on the same day everywhere).
Solstice data from here (GMT- Grenwich Mean Time =UT)
New and full moon data from here (UTC- Coordinated Universal Time =GMT=UT)