'Thee' day to have a 'Nice Day'

In my previous article I explained how July 13th is "Ethan Hunt" day as well a commemorative day for other anniversaries or 'day of' / 'xyz day' in Japan. One of the other quirky anniversaries today is July 13th is "Naisu no Hi" ナイスの日 or 'Nice Day!'

The date comes from the wordplay that reads "nai (7) is (1) su (3)" (nice). There is no clear background and how or who registered this anniversary. Some suggest it comes from the anime "The Girl Who Leapt Through Time" (2006). At the beginning of the anime a TV announcer introduces July 13 as "Nice Day". 

Although there are no events or campaigns specifically dedicated to Nice Day, as it is a commemorative day with a positive meaning, I wanted to mention it. And take the opportunity to say, "Have a nice day!"