Saturday is the first official day of summer - and the longest day of the year. Here’s how you can celebrate the sunshine to kick off summer in the DMV. Food and wine tastings, live music, cooking demos, and much more will be on display on Saturday at the National Mall, where teams will compete in the "Giant National BBQ Championship" for a $1,500 prize. Solstice SaturdayCelebrate Solstice Saturday, as the first mark of the first Saturday of summer. Philippine Independence Day FestivalThe Mosaic District will host the second Philippine Independence Day festival this Saturday and Sunday, featuring food vendors, speeches from the Philippine Embassy, face painting, and more.