📜4️⃣📅

#leap year #4 year cycle #calendar reform #historical calendar #ancient calendar

🗿☀️

#stonehenge #solstice alignment #ancient calendar #megalithic #sun worship #archaeoastronomy #cultural solstice

🗿☀️🗓️

#maya #mayan calendar #mesoamerica #ancient calendar #sun stone #ancient civilization

🗓️☀️🌙✨

#mayan calendar #haab #tzolkin #long count #maya astronomy #ancient calendar #mesoamerican calendar #skywatching

1️⃣3️⃣🌀🗓️🗿

#mayan calendar #tzolkin #mesoamerican calendar #13 cycle #ancient calendar #260 day cycle