Rainbow performed on this day in 1981 at the Capitol Theater in Passaic, New Jersey.
Rainbow were near the end of the American dates which had begun their Difficult to Cure Tour. While they had begun in a set of club venues, they had quite quickly moved on to larger arena shows on a set of dates co-headlined by Canadian hard rock guitarist Pat Travers.
There is no known recording of this particular concert.
I talk more about the venue at which they performed, the Capitol Theater, here.