Answer and Explanation: On the cosmic calendar the arrival of anatomically modern humans occurs on December 31st at about 23:52, or 11:52 pm, only about 8 minutes before the end of the year.
That said, primitive humans appeared earlier, at 22:24 or 10:24 pm on December 31st..
The Cosmic Calendar is a method to visualize the chronology of the universe, scaling its currently understood age of 13.8 billion years to a single year in order to help intuit it for pedagogical purposes in science education or popular science..
Each “day” on that calendar would last around 38 million years, and a single human lifetime would last just about 0.2 seconds, on average.
If this were how things truly unfolded, December 31st would be the most important date of all..
Here, the history of the universe has been scaled down to one year, That is, one month is equivalent to one billion year, one day to 30 million years, one hour to 1.2 million year and one minute to 20 000 years.
Formation of the nebulae from which the solar system originates..
A cosmic year is the time (about 225 million years) needed for the solar system to revolve once around the centre of the Milky Way Galaxy..
A sequence of pictures, properly spaced, compresses the history of the Universe into one year.
Every cosmic month lasts 1250 billion years, each day represents 40 million years, and every second is equal to approximately 500 years of our history..
The Cosmic Calendar is a method to visualize the chronology of the universe, scaling its currently understood age of 13.8 billion years to a single year in order to help intuit it for pedagogical purposes in science education or popular science..
Possibly the best way that has been found so far is Carl Sagan's Cosmic Calendar, condensing the 13.8 billion years into one calendar year that we can understand..
At this scale, there are 437.5 years per cosmic second, 1.575 million years per cosmic hour, and 37.8 million years per cosmic day.
The concept was popularized by Carl Sagan in his 1977 book The Dragons of Eden and on his 1980 television series Cosmos.
The Cosmic Calendar is a scale in which the 13.7 billion year lifespan of our universe is mapped onto a single year.
This chronological arrangement was done by famous astronomer Carl Sagan.
In this mapping, the Big Bang took place on January 1st at 12 a.m., while the present moment is 12 p.m. on December 31st.
The concept of the cosmic calendar was popularized by famous astronomer Carl Sagan to help people understand just how far apart on a time scale events in the Universe are.
He chronologically arranged the 13.8 billion years of the Universe’s age into a single year.
Solar calendar used by the Mandaeans
Calendar used by the Yoruba people
