The 4th of September.
May 1
May 1st.
Sept 1
In the US, Labor Day is the first Monday in September. The actual date varies according to the calendar for the given year.
The First Monday in September
September 5, 1884
Sep 8
Labor Day was Monday, September 2 in 1974. It is always the first Monday of September. That was set by law and does not change.
Labor Day was Monday, September 7 in 1992. It is always the first Monday of September. That was set by law and does not change.
Labor Day was Monday, September 1 in 2003. It is always the first Monday of September. That would indicate that the first Sunday after Labor Day in 2003 was September 7th.
Monday the 1st of September 1969.