Strong 11m band opening this evening-many frequencies occupied. Unusual was that the band was closed during daylight hours, then opened up after sunset. Heard a station LSB 27.505 MHz 01:15z 29-AUG-2021, QSB, OM and a youngster operating with some background chatter from other users on frequency. OM was trying to interest youngster in amateur radio, by mentioning how ionospheric propagation works, and mentioned working stations around the world. Youngster asked about the price of OM's radio, OM stated "$600.00". OM then mistakenly(?) ID'ed as "VE6DW". Online search for this callsign yielded only brief mention in a few ancient issues of amateur radio publications - from 1950 to the 1960's. Perhaps OM was pulling the leg of the casual listener. 11m opening suddenly closed up tight at about 01:30z 29-AUG-2021. Just for the sheer unpredictability of what I might hear, I greatly enjoy monitoring "freeband".