Although I was on 472kHz overnight, my PC decided to close (the whole PC including WSPR) some time after 0320z to install updates. It was re-synced to internet time and restarted at breakfast time. Wednesday overnight is usually when this happens. I could alter settings but this is not really an issue.
Local G4KPX (14km) is spotting me this morning so far on this band. G3WCB (101km) and G3THQ (88km) were spotting me just before the PC turned off.