Well I believe the end of this Month is the end of the 6th night. It goes into the seventh day, and there is no seventh night, correct?
On a regular I just pay attention to the 28 day cycles.
But you make an interesting point, how come it is 260 days?
I myself obviously do not know much about the Mayan Calender or
alot of the history behind it, but I know a small amount about
some of the dates and theories behind them. And I don't see any
of it as some dooms day crap. However I do believe there is
significance in it all.