I've been noticing that a lot of my crops seem to have had a "grace period" added to the waste times. It seems to be fairly consistent throughout the crop selection, so I'm assuming the devs have added a little more time to help those of us who "just missed" the waste time due to whatever little crisis we're dealing with in real life that day. If it ain't broke, don't fix it; I like having a little more time to get to them.