In the US labor day always falls on Monday.
Monday, September 7, 1970
September 9, 1970 was a Wednesday.
The day of the week that May 1, 1977 fell on was a Sunday.
It was a Monday.
Labor Day was Monday, September 5 in 1977. It is always the first Monday of September. That was set by law and does not change.
Labor Day in 1984 fell on September 3.
I got my drivers license on that day in 1977 and it was a Thursday.
It was a Tuesday. That happens to be the day I was born; my mother was in labor on Labor Day.
Usually the week of Labor Day. If Labor Day is a Friday, then the Monday after that.
December 9th, 1977 was on a Friday.
April 16, 1977 was a Saturday.
January 11, 1977 was a Tuesday.
December 15, 1977 was a Thursday.
26 February 1977 was a Saturday.