When did I ovulate? Help

On Sept 21, at 10:30 am, I got a positive LH strip and a flashing smiley on digital clear blue advanced. BD that night.

On Sept 22, at 9:30am, my LH strip looked negative but I got a solid smiley on digital clear blue advanced. BD in the afternoon.

Should I BD again tonight? When do we think I ovulated based off that info?