At about 40 degrees altitude in the west, during its approach, it shortly became very bright. A conservative estimate by me placed it at at least magnitude -5; Leo Barhorst observing the same pass from Almere, some 30 km North of me, estimated magnitude -6. After that, it slightly fainted, remaining bright but not as bright as it had been in the west.
Update: telescopic images by Quintus Oostendorp on SpaceWeather.com show that the brightening was due to the solar panels reflecting sunlight.
This brief brightening was captured by my camera. The Hyades are visible to the left, the Pleiades to the right.