User blog comment:Peachygotit-Kica/Concert Pages/@comment-131168-20130518121139

"Release dates. Dates on a good number of pages for concerts are often written as "2003.12.26" or "2003-12-26" because it is how the Japanese write their dates."

It is probably for the best that dates are listed consistently, but as a computer guy I've really come to prefer YYYY-MM-DD format. Two main advantages: Always takes the same number of characters, and it's good for sorting lists since the chronological order is the same as the alphanumeric order. Already a lot of lists on the site use this format, like discographies on artist pages.