4. Similar to Pocky Day which is a similar celebration in Japan. Pepero Day was first officially celebrated in Korea in 1997. Pocky Day was first officially celebrated in Japan 2 years later in 1999. However, Glico, a Japanese company, started producing Pocky in 1966, 17 years before Lotte created Pepero. There is some controversy between Pepero and Pocky, with Glico claiming that Lotte copied Pocky when they created Pepero.