10m Es - good yesterday

Yesterday was pretty good for Es with the following stations in the log spotted:
HB4SL
HB9FGQ
SI9AM
OH5XO
OK2SAM

Spotting me was:.
GM4WJA

OK, there were long gaps in between sometimes but it goes to show how WSPR is able to seek out weak, fleeting openings on 10m.  Did someone tell you Es is a May, June, July phenomenon? It is September 6th and I am still seeing Es every day on 10m.