Rainbow may have performed on this day in 1979 at the Civic Center in Glens Falls, New York.
Blue Öyster Cult was at this time on their Mirrors tour, where they were supported by Rainbow; the band had joined them just the night before for the first time.
There’s a chance that Rainbow did not in fact perform on this night; some things on the BOC website I use for research for this part of the tour suggest that Rainbow were absent from Glens Falls. Until I get definite confirmation beyond hearsay, I cannot speak to this any further.
There is no known recording of this particular concert.