2/24 is a big music day for me:
2/24/74 - The Dead play an absolute burner of a show at Winterland. Great set list consisting of a pretty tight 1st set and a beautiful, exploratory second set. We've got a great soundboard quality record as well.
2/24/75 - Led Zeppelin release one of my favorite albums, "Physical Graffiti" which I think really captures them at their peak creativity.