In 1978 the US Congress passed legislation proclaiming the first Sunday after Labor Day  as National Grandparents Day.

Some would say it’s just another Hallmark holiday, suggesting that it’s a “made up” holiday concocted primarily so that Hallmark and other companies can profit from it. Certainly money is made relative to Grandparents Day, but the same can be said for birthdays, Easter, Christmas, and a variety of other holidays.