61.5 hours is certainly unexpected, which makes it kind of funny. But let's review the math a bit. The post was put up at roughly 13:00 on the 14th. 61.5 hours is 2 days plus 13.5 hours. So that's 13:00 on the 16th plus 13.5 hours, which takes us to 02:30 on the 17th (EDT). So expect another video by the time you wake up on the 17th?
But actually, I think he was poking fun at all of us (myself included) who were waiting anxiously for the last video, which came a little late.