Constant drizzle this morning, with intermittent rain to make things interesting, couldn't see the road surface very well in the dark, and hit a pothole. I see that pothole every day, and I usually steer clear of it, but I forgot about it today. Pinch flat. Walked a short way to change the tube under the I-95 overpass, but the new tube failed at the valve. Walked a half mile to a street light bright enough to patch the old tube, but even with the better light my first patch missed both holes. Not a total loss, though: the first patch gave me an excellent reference point and I was able to get the next two patches right where they belonged. Vulcanizing cement works in the rain! But it's really hard to wait long enough for it to dry. Pumped up and rode off, got to the station only about an hour late. Cold, wet, with dirty hands, but it felt like a victory that I'd resisted the temptation to go home and go back to bed.

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Edit: Okay, I admit, I was pretty surprised when I got back to the bike at 4 PM and found the back tire was still fully inflated. But it was! Patched the failed tube after I got home: the hole was in the factory glue, where they stick the valve assembly to the rest of the tube. I probably should have just tossed it, but maybe the patch will hold.