Father's Day is observed on the third Sunday of June. It honors all fathers, grandfathers, great-grandfathers, and father figures for their contribution. The Day was created to complement Mother's Day.
Yes, FSRDC celebrated Mother's Day too!

How about some fun fast facts about Father's Day:
According to the United States Census 60% of all men are Dads in the United States, with 8% of kids being born to men under the age of 20, 60% of kids born to men between the ages of 20 to 29, and 32% of kids born to men over the age of 30 [1].
President Nixon on April 24, 1972 signed P.L. 92-278 into law officially making Father’s Day a federal holiday celebrated on the third Sunday in June [2].
References:
1.”US Census on Fathers” - United States Census, Census.gov.
2.”Fathers Day Becomes Federal Holiday” - Archive US House Representatives, History.House.gov.