What holidays are you aware of? Rosh Hashannah Yom Kiippur, Palm Sunday, Pentecost, Ramadan, Hajj, (etc.)? And what about the literally thousands of different observances of differnt religions and denominations throughout the world. Does your schedule change from year to year because of different holidays and observances? of course it does, because you live on the same planet 9alledgedly) as I do, and it's getting smaller and smaller. Get used to it. And read a book, will Ya'?lol.
If everyone keeps telling you you're a jackass...maybe you should check and see if you have a tail.