N1MGO (5293km) was the first USA station to spot my 500mW 10m beacon today at 1254z. This was quite early for recent days. A couple of other USA spotters were K3ZV (5692km) and WG2Z (5600km) at the same time. This bodes well for a decent afternoon on 10m WSPR.
At the time of writing (1758z) the last USA station to spot me was K9AN (6505km) a 1748z.