No this one is not from the standard national *whatever* day website. This one is actually a recognized Buddhist observation day!
Did you ever consider the possibility of changing your perception of your world for a day. Really thinking about things from a totally different perspective than is normal for you? Seeing things differently for the very first time?
In essence that is what this day is. You can always go back to your old way of thinking any time you want, but you may be surprised...somethings may never be the same again!
Give it a try!
Change your mind day
Check out a couple of these You Tube presentations and see how it fits.