I agree with Chris. Could just be really bad luck that led two accidents in a month. On the other hand, perhaps this is a bad time of year to ride at that time of day. In a few more weeks, the sun will be in the same position earlier.
Nonetheless, any accident should give a person reason to consider ways to improve his own safety. Sometimes there's little to be done. Like Dexmax said though, it might be wise to try a different time, or a different route. I know when I ride in poor visibilty I usually stick to routes that have a dedicated bike lane or at least a sidewalk, and I watch behind whenever I have to ride on the shoulder. Part of that is probably road paranoia from being an off-road rider, but then again, it's worked so far.
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