Beware the Low Sun
As we are in the time of the autumnal equinox, the sun is currently rising and setting due east and due west. Our grid pattern road network is set up so that a lot of roads run due east/west. This means that as the sun rises and sets during these few weeks, it will be directly in the eyes of roadway users traveling towards the sun.
As bicyclists, this is important since motor vehicle drivers may be sufficiently blinded to be unable to see us. A number of years ago, two GCC members were hit by a car while riding under these conditions. You should avoid riding east in the morning for up to an hour after sunrise, and avoid riding west for up to an hour before sunset, especially on roads that do not have bikelanes or paved shoulders. If you must ride under these conditions, use a mirror to keep track of overtaking vehicles, and be prepared to leave the roadway if necessary.