another very bright flasher

At 8 pm, while outside enjoying a warm evening, a long-duration (10 seconds) flasher appeared of brightness -6 (brighter than brightest Venus) in the southern sky at 50 deg declination. I refer to these sightings as flashers based on the typically instantaneous flashes of varying brightness that are almost a guaranteed viewing if one gives a half hour or more of continuous observation. As a 54yo lifelong skywatcher, I have seen well over 50 uap including close-ups, daytimers, and shapeshifters. I haven't seen an extraterrestrial that I am aware of. Over 50% of the sightings have been flashers. 0% were common satellites. The light of a flasher typically is of point-source starlike intensity vs dull, reflected light from satellites or planets. Normally the flashes are instantaneous or microseconds in duration but a few have been of seconds-long duration. Flashing light is a great way to send information I hear.