I remember it when it was The Cats Pyjamas.Yes all on the same night. No seats, just people dancing to Ska revival. Quality.
The vunue that you mention was called The Moon. I saw some punk bands there 1980ish.
It had previously been the Regent pictures. Bizarrely some 15 years prior to watching punks there, I saw Jason and the Argonauts in 1964.