The 13 month per calendar year (Mayan calendar) just makes so much sense as a web developer but somehow as a human it also seems hella mundane to have the same 28 day cycle repeated. Maybe that last day of the year party would make up for it though.
Of course those days would be very hectic travel wise if the entire population of earth were to migrate around on those days.
Even now 29 Feb shouldn't exist, it should just be "leap day" and have no numerical significance.
Screw the computers, they can learn to adapt.