A January storm here can settle in for two days, laying snow off the lake in slow, patient bands that never quite stop. Snow Knights LLC runs against that — plowing driveways, opening walkways, cutting back the berm the town plow leaves across the end of every drive. The measure of it is simple: somebody steps out at seven in the morning and the way is already open. When the ground finally softens, the same work turns to mowing, trimming and edging Ithaca lawns through the long green stretch of the year. Two trades, one set of properties, all twelve months of it.