Comparable to Iridium-5 times visible
Hi Chris,
The midnight sighting had a flare comparable to the lowest magnitude Iridium flares (-6 or -7), certainly.
I've got a friend in Paris and another one near Arles (south of France) who saw ISS 5 times last night!!!!!
I missed the earliest and went to sleep after the second.
This is possible at our latitudes (45-51 degrees) in the summer, when ISS is never in Earth's shadow when it passes at night. This also means BTW that Mars is VERY LOW above the horizon as the best oppositions occur in the summer, when the ecliptic plan is very low to us.
Raoul