The summer solstice arrives on Monday at 6:34 EDT. You can read about what it is on the WunderBlog at https://www.wunderground.com/news/summer-solstice-first-day-summer-20140619#prclt-JnRYWA1s. You might also be interested to read about the difference in the length of day from north to south at EarthSky here. Happy astronomical summer!