Progress, of a sort

I've actually worked on the YA novel for three days in a row, which is a rarity so far this year. Unfortunately, most of today's work consisted of messing with spreadsheets and Wikipedia to work out the calendar and timekeeping system of my fictional Mars settlers rather than any actual, you know, fiction. This is my comfort zone, to which I retreat when the writing itself is not cooperating. Oh well, it's valuable worldbuilding and at least I typed it into my notes file rather than as yet another expository lump in the text which would eventually have had to be either excised or smoothed into the action.