Well, just to clear shit up.
From what I heard, Mayans didn't count their years the way we do, our year is something like 10 years to them, so no worries, gonna happen sometime around 4000
That's a misconception. The 'leap year' was made to keep the calendar in synchronized with the seasons (Spring, Summer,Autumn,Winter) since there are 365.2 days (24h) in a year. In south & central America they don't have seasons so they didn't need to have one. For us a day takes 3600 min. For them a day is a sunrise, sunset. When you take that into account the date is correct.