The 260-day calendar, called the tzolk’in, was one of several inter-related Maya systems of reckoning time, also including a solar year of 365 days, a larger system called the “Long Count ...

The rare three Friday the 13s in a year occurred in 2012 (the same year the Mayan calendar’s 13th Baktun ended, which prompted apocalyptic predictions). The last time it happened was 2015.

Did you know that some of the oldest human-made structures on Earth align precisely with the rising sun on the summer ...

Every day in the 260 day calendar has a unique position in time like the Haab or the solar 360 + 5 day Maya calendar. Each day’s position in the calendars only repeats itself every 52 solar years.

Dallas Trinity FC begins its second Gainbridge Super League campaign in six weeks. After announcing several contract ...

The in-depth observations of First Nations seasonal calendars could be key to improving solar power forecasting, according to ...

Mesoamerican cultures shaped the history of Central America through remarkable achievements in architecture, science, and society. Among the most influential were the Maya, who thrived in present-day ...

Antonio Pichillá Quiacaín continues his ongoing exploration of the knot and its capacity for metaphor at Elizabeth Xi Bauer ...

Senate GOP leaders are scrambling to shore up the votes for the White House’s $9.4 billion request to claw back funding for ...

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The Supreme Court of Saudi Arabia has officially declared Thursday, June 26, 2025, as the first day of Muharram, marking the start of the Islamic New Year 1447 AH, after the crescent moon was ...

The Gregorian calendar year differs from the solar year by only 26 seconds—accurate enough for most mortals, since this only adds up to one day’s difference every 3,323 years.