Eggplant.place

230d

I've created a 2025 calendar using bird pictures I took in 2024. It's free, so pass it on to bird-loving friends. Here's the link: https://drive.google.com/file/d/1OzbiOhuY4ulVrHKO7TFlZDBd9qCNHPUu/view?usp=drive_link
#birds #birding #birdwatching #birdphotography #wildlife #wildlifephotography #photography #nature #naturephotography #calendar #HoosierMast

This photo shows the cover of the bird calendar. It's a Cooper's hawk, wings upraised and tail spread, about to take flight.

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15d

Just wondering out loud - how did you stumble across the Vivaldi browser? 🤔

#Vivaldi #Browser #Mail #Calendar #Notes #RSS #Feeds #Tasks #Apps

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86d

What Is the Origin of the Calendar?

The modern calendar borrows influences from a collective of early calendars such as the Jewish, the Babylonian, the Roman, and the Egyptian calendars.

by Mike Cohen

https://www.thecollector.com/what-is-the-origin-of-the-calendar/

Books on calendars at PG:
https://www.gutenberg.org/ebooks/subject/2284

Maya calendar:
https://www.gutenberg.org/ebooks/subject/12329

#history #calendar

The Maya sacred calendar is called Tzolk’in in Yucatec Mayan and Chol Q’ij in K’iche’ Mayan. This calendar is not divided into months. Instead, it is made from a succession of 20 day glyphs in combination with the numbers 1 to 13, and produces 260 unique days. Multiplying 20 x 13 equals 260 days.

This image illustrates how the numbers 1 to 13, cycle through the 20 glyphs to form dates in the Tzolk’in calendar. Any such combination, such as 1 Imix’, repeats only after 260 days have passed.

The length of the Tzolk’in matches nine cycles of the Moon and the gestational period of humans. The Tzolk’in is also related to the movements of the zenith Sun and the growing cycle of corn.

https://maya.nmai.si.edu/calendar/calendar-system#:~:text=The%20Maya%20sacred%20calendar%20is,x%2013%20equals%20260%20days.

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