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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God I fucking hate being an atomized subject. I have a decent handful of close friends but they're all so scattered and segmented into their own cells that it's just not enough - we only see each other so often and it's still just in its own bubble that doesn't equal an actual sense of community. I'd befriended all of my colleagues for a while but those friendships have kind of segmented and/or fallen apart for various reasons so its back to pure isolation and alienation now. Being single also definitely makes it more acute, though it could be pretty lonely with my ex partner as well and it was still the right move to end things. Idk we just designed human society wrong, we could have had something so much more beautiful and real but we're stuck as fucking pod people because of the stupid cosmic horror that is capitalism.
yeah, felt. sorry you're struggling with this rn, I feel it often too.
I think we all do, comrade
at least we all can commiserate here lol
I hear that. I moved, have no friends where I am, and everyone back where I came from is so crushed under the general weight of this society that they rarely have any energy for sending texts let alone any real interaction. I have to remind myself they don't hate me, they're just as miserable as I am and don't have the oomph to reach out.