Time since building of Stonehenge

Time since building of Stonehenge (5,120 y)

/fact/time-since-building-of-stonehenge

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Time since building of Stonehenge (5,120 y)

is 1/500 of Age of earliest stone hand axe (2.6 million y)...more
is 1/500 of Time since the end of the Neogene geologic period (2.58 million y)...more
is about as big as Age of oldest wooden wheel (5,150 y)...more
is about as big as Time since the earliest writing (5,100 y)...more
is 2 x Time since the birth of Pythagoras (2,594 y)...more
is 2.5 x Time since the birth of Hero of Alexandria (2,014 y)...more
is 20 x Time since the birth of Joseph Fourier (256 y)...more
is 25 x Time since the birth of mathematician Maria Gaetana Agnesi (206 y)...more
is 25 x Time since the first iron steamship crossed the English Channel (202 y)...more
is 40 x Time since birth of M. C. Escher (126 y)...more
is 50 x Time since the birth of chemist Rosalind Franklin (104 y)...more

If this was a standard unit ...