Snowed (or sleeted, rather) all night and all day. Snow plows couldn't keep up so the roads were all covered in a layer of snow, making travel rather slow. On the plus side, work let off early. I didn't go anywhere else, other than to the gas station to get a gallon of milk.
I needed that because there are a few geocaches requiring this calculation in order to get the final coordinates. My first implementation was in PARI/GP, but I think it'll be more convenient as a web page. I was getting tired of relearning PARI/GP every time I needed to run the script. :) (References: circle formula, regular expression that matches a floating-point number)
Mailed the photos this morning. I'll have to remember to ask my parents if they got those in about a month's time. The postal service back in the old country lost the last package that I sent out.
And finally, I thought I had already registered all the Visual Studio Express Editions that I installed on this computer, but the Visual C# IDE asked me to enter the registration code again. Okay, well, registration is still free so that's only an annoyance.