The Maya Calendar's base date is 3114 BC, however it is widely accepted that this must have been for mathematical and calendric utility as opposed to actually representing the date at which the Maya's began recording events or even had a calendrical system.
This is a central part of their long count calendar system, which was used in conjunction with their Sacred Round and Solar Year which formed their short count calendar.
According to the Mayan calendar, it is currently the year 5,125. This differs from the Gregorian calendar, which is currently in the year 2021. The Mayan calendar is based on a different system of counting time and has a different starting point than the Gregorian calendar.
Mayan
the Mayan calendar
The Mayan Tzolkin calendar has 260 days, and the Haab has 360 days. The Tzolkin calendar was used for daily life, but the Haab was used for religious holidays and such.
The calendar, know as the Aztec Calendar or the Mayan Calendar.
the Mayan....
The Mayan Long Count calendar started on the 11th of August, 3114 BC. The date 3372 BC predates the start of the Long Count calendar by about 240 years. Therefore, there are no specific facts about the first day of the Mayan calendar in 3372 BC.
Nothing causes the Mayan calendar to end it is just the end of one cycle and the start of another one. Much the same as the new year in the Gregorian calendar. It's just a longer cycle.
"Tzolkin" and "Haab'" are two of the Mayan words used to name their calendar.
No, the Mayan calendar is not off by 150 years. There was confusion about the end date of the Mayan Long Count calendar in 2012, but it was a misinterpretation, and the calendar is considered accurate for the time period it was created for.
The Maya did not base their calendar on the birth of Christ. The Maya based their calendar on the phases of the moon and venus and the position of the sun. The year 2012 is simply our equivalent to the same time on the Mayan calendar.
The Mayan calendar had 18 months of 20 days each