On which it rained, snowed, and was cold, providing me with little impetus to leave the house. So I rediscovered my interest in Mersenne Primes, and coded some webpages (hey, you're looking at one right now...). Actually, it's not been such an antisocial day - my youngest sister and her family have visited, and Emma telephoned, which was nice. But mostly I've just mucked around in cyberspace.
Oh, and drank coffee! I tried that new liquid coffee extract stuff - very nice, most impressed. The hi-tech dispensing mechanism built into the bottle is obviously a selling point for people such as myself - much more fun than sticking a teaspoon into a jar.