The given date was a Saturday.
Father's Day would be the third Sunday of the month June, since the probable dates lie between 15th to 21st in June.
June 20th 1837 was a Tuesday.
June 12, 1998, was a Friday.
On June 20th of 1968, the day was Thursday :)
June 20th
Saturday
It was a Tuesday.
June 21st, 2011... first day of summer. June 20th, 2012... first day of summer. June 21st, 2013... first day of summer. June 20th, 2014... first day of summer. June 21st, 2015... first day of summer.
June 20th, 1961 was on a Tuesday.
June 13, 1998, was a Saturday.
In the U.S., it was the 20th of June.
In 1993 Father's Day was on 20th June.