The way with enthusiasm, we are celebrating special days like Fathers’ Day, Yoga Day, Mothers’ Day, Daughters’ Day, Earth Day, Organ Donation Day, World Laughter Day, it tells two things:

Either

We have forgotten these special people or special things in life and we need annual reminders;

or

These are so special people, things, that they needn’t be forgotten ever. 

I think it is more of the 1^st as, had we not forgotten and had the importance of these wouldn’t be emphasised annually, we wouldn’t have celebrated these days.

The special days are the reminders that these things and people matter round the year. Don’t ignore them.

By the way today i.e. 23^rd June is celebrated as International Olympic Day to make people aware of the importance of games in life.