V53DX (8471km) in Namibia (JG87 square) has been spotted here on 10m JT65. This was a total surprise!
G0CHE (IO90) replied to his CQ, although my spot of him was not uploaded to PSK reporter.
UPDATE 1402z: No other 10m JT65 spots since.
UPDATE 1534z: Still no further 10m JT65 spots. I guess any South Americans will come through in the next few hours, if at all.
UPDATE 1725z: No further 10m DX. Time to QSY to 630m.