Mar10 Day

Mar10 Day is the holiday for the fictional character Mario. The day is on March 10th.The reason it's featured on this day is because of the folowing reason-
 * Delte the ch on March
 * Add the number of the day which is 10
 * since 10 looks like io, the word spells out Mario.

Links

 * Party Guide - A guide to all the holiday and events on each day.
 * Wikipedia - Events on March 10.
 * Knowlage of Fun - Events and Holidays.