This year the free Slurpee day falls on Monday, July 11th, 2016. 7-11 will give away free small Slurpee® drinks from 11 a.m. to 7 p.m. local time, Monday, July 11 (7/11), while supplies last. Free Slurpee Day is always on July 11 because the month and day abbreviation is 7-11.