So, When should we celebrate Jimmy Shaker day?

When I went and saw this movie back at the theater with my older Brother and his friends when I was 12 and they were all 20, We all thought that the concept or the phrase "Jimmy Shaker Day" Sounded pretty funny and actually quite cool. We decided that we would all celebrate Jimmy Shaker day, and some day try to open a resturaunt called Jimmy Shakers. So when should everyone celebrate Jimmy Shaker Day? We usually celebrate in of Sept 17th, We figured it kinda sounded like a St. Patricks day holiday. So we celebrate it 6 months apart from St. Patricks, figuring its nice to have 2 of them in one year. We celebrate it by having a couple of beers and we all a kinda feast with Steaks, Ribs, Buffalo Wings, Shredded Pork, Brisket, Potatos or Fries, Cole Slaw rather than Corn Beef and Cabbage. So I am wondering, does anyone else celebrate Jimmy Shaker Day?