Aunt Dana-

"Pepero Day" does not really have any significance. Its a cookie covered in chocolate that was developed by Lotte Department store here in Korea like 8 years ago. The holiday is pretty much a way for them to make money I guess. Its actually an entire week of celebration. Lotte is like the most popular brand name here, and they make pretty much everything. They have a Department Store, Amusement Park, Grocery Store, Movie Theater, etc. etc.