Second last commute of the year. I'll probably ride out the university several more times as its a convenient place to warm up, but they won't count toward my commute total. -15C for this morning's ride. Coming up to the shortest day of the year the sun is setting early and it was nearly dark by the time I got home yesterday. Today sunrise is 8:55 and sunset 4:56.

On Friday I noticed that I'd been riding with the wrong size spare tubes for almost two weeks. I keep forgeting to switch spare tubes when changing between the touring bike and mountain bike.