Personally and I respect the decisions of other people I think that Mother's Day is any day that you have to send a gift to your mother, I should not expect a specific date to be able to show affection to Mom.

That's the reason why I don't give congratulations on this day, at least not as a "special" day. Every day of the year should be Mother's Day. It's like the famous "Thanksgiving Day". If every day of the year were "Thanksgiving" days, the world would be very different, I'm sure.

... and so I could say about almost all the famous modern "one day" celebrations.