it's a Monday....does it really matter which one?....pretty soon i can imagine good Friday being on Monday...
One thing I like about January (about the only thing) are the two holidays. Work both - by myself - and get 40 hrs extra pay.
My Wife made up some family calendars for a number of years. The calendar software she used automatically inserted the holidays year after year. But, we found she needed to closely double check the software as it sometimes made that same mistake and missed a Monday holiday by one week . The same thing could have happened with the Nasty calendar this year.