This is:

Bobby 'Boris' Pickett's Birthday

Too bad Bobby's only hit, "The Monster Mash" is only relevant at the end of October.

Grandmother Achievement Day

A quick search on the web reveals that this "day" is mostly pushed by greeting card sites. However, at least in the U.S., most square dance groups have lots of grandmothers, so it might be worth mentioning.

Beatles first live performance in the US

The Beatles arrived in the US on February 7, 1964, and performed on Ed Sullivan less than 48 hours later. But their first public concert was on February 11 at the Washington Coliseum.

Obviously, a good day to do Beatles songs. You can find a list of currently available Beatle tunes at Dosado.com here.