Chocolate Eclair Day Always June 22nd. National Chocolate Eclair Day is a sugary, sweet way to start your day. It's a sweet, tasty way to end your day, too. Eclairs are a light, crisp pastry filled with a pastry cream. We hope that you are not on a diet, or watching calories, carb or sugar. Because participating in this day, means consumption of high calorie, high carb, high sugar eclairs.