Great post Zoso.
A holiday in many parts of the world is a synonym for a vacation! I hope you make tomorrow a vacation for you and enjoy every second of it.
When I felt like calling out sick for work although I wasn't (use em or lose sick days) - I always called it a mental health day, a day for me, doing what I felt like doing. Whether tomorrow is a holiday, vacation or mental health day....make it about what makes YOU happy.