Although my 500mW 10m WSPR beacon was not spotted overnight I did see OH7TE (1861km) running 10W at 0418z on 6m WSPR with quite a bit of drift. Although likely to be Es, I am not certain. G4NRG (58km) was spotted on 6m WSPR this morning.
It certainly to be on the right frequency in the 6m band! See my post yesterday!