I didn't even realize there was a World Emoji Day. Apparently its on July 17? Anyway, this tweet from the @Calacademy account was particularly adorable.
In honor of #WorldEmojiDay, visit us & we'll show you for-realz versions of ??????????????????? pic.twitter.com/KZtwj9O6ta
— CA AcademyOfSciences (@calacademy) July 17, 2015