Splurge Day Always June 18th. It's National Splurge Day, oh Yeah! National Splurge Day is a day to treat yourself excessively, to anything you want. Maybe, you're on a diet, and that special dessert is too many calories. Maybe, you want to buy a steak, and the budget is a little tight. Toss out the reservations, and go for it today. Celebrate this day to the fullest degree. Treat yourself to whatever you want and to excess. For, this is a day to splurge. Do so without worry or concern...until tomorrow.