The days are getting slightly longer now. The very first USA spot of my 10m 500mW beacon today was KC1AWS (5308km) at 1204z. The openings seem to be getting slightly longer? Several spots by 4X1RF (3519km) in the 10m log too today.
UPDATE 1835z: at the moment, the last spot from the USA was WG2Z (5600km) at 1824z.
UPDATE 1925z: WG2Z does seem to have been the last USA station to spot me today. Only local spots since 1824z.