Grandparents Day September For Kids Grandparent's Day: Did you think this one might have roots in the ancient cultures? If you did, you would have been wrong. Grandparent's Day is a modern holiday.  In 1978, President Carter proclaimed Grandparent's Day as a National Holiday, to be celebrated in September. You might be thinking - wait, didn't the ancient Chinese honor their ancestors? They did! All of them. All the time. This is different. This is a day set aside for each of us to thank our own grandparents for all they have done for us.  Grandparent's Day (Sept 12, resource)  Starfall - It's Grandparents Day!  Free Presentations in PowerPoint format  Free Clip Art  All Rights Reserved    Clip Art Credit: Phillip Martin Have a great year!