The Mesoamerican Long Count calendar is a non-repeating base-20 and base-18 calendar used by several pre-Columbian Mesoamerican cultures, most notably the Maya. For this reason, it is often known as the Maya Long Count calendar. Using a modified vigesimal tally, the Long Count calendar identifies a day by counting the number of days passed since a mythical creation date that corresponds to August 11, 3114 BCE in the proleptic Gregorian calendar. The Long Count calendar was widely used on monuments.
Background
The two most widely used calendars in pre-Columbian Mesoamerica were the 260-day Tzolkʼin and the 365-day Haabʼ. The equivalent Aztec calendars are known in Nahuatl as the Tonalpohualli and Xiuhpohualli.
The combination of a Haabʼ and a Tzolkʼin date identifies a day in a combination which does not occur again for 18,980 days (52 Haabʼ cycles of 365 days equals 73 Tzolkʼin cycles of 260 days, approximately 52 years), a period known as the Calendar Round. To identify days over periods longer than this, Mesoamericans used the Long Count calendar.
The Long Count calendar is divided into five distinct units:
- one day - kin
- 20 days - uinal
- 360 days - tun
- 7,200 days - katun
- 144,000 days - baktun
Mesoamerican numerals
Long Count dates are written with Mesoamerican numerals, as shown on this table. A dot represents 1 while a bar equals 5. The shell glyph was used to represent the zero concept. The Long Count calendar required the use of zero as a place-holder and presents one of the earliest uses of the zero concept in history.
The Mesoamerican Calendar - Ancient Americas 
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Okay so still nothing new except for some guy saying the same shit they’ve been saying. And the same fucking FLIR image shows up in this article in a YouTube video lol
The main reason i think it isn’t real is because the shit these things can allegedly do defy the laws of physics and if the U.S. had reversed engineered any of it they could literally conquer the world today
The only “new” thing is this supposed corroboration from someone who wasn’t a crank, but that kinda supposes that he hasn’t decided that bullshitting congress was worth sacrificing his reputation over.
Yeah, I have no idea why E.T. would bother traveling lightyears just to total their car in the United States.