Although the band did not open to the USA until very late (1454z), plenty of different USA stations have been copying my 500mW WSPR beacon all afternoon. This is much better than yesterday.
The first spot of me was KZ8C (6290km). At the moment (it is 1805z) I am still being spotted by several stations in the USA.
UPDATE 1945z: The last USA spot of my 10m 500mW WSPR beacon was by K9AN (6505km) at 1902z.