If Time since the start of the last glacial period (Ice Age) (110,000 y) was a standard unit ...
Time since the end of the Precambrian supereon, explosion of life forms (541 million y)...more would be 5000 x Time since the start of the last glacial period (Ice Age)
Time since the end of the Ordovician geologic period (444 million y)...more would be 4000 x Time since the start of the last glacial period (Ice Age)
Time since the emergence of earliest humans (2.8 million y)...more would be 25 x Time since the start of the last glacial period (Ice Age)
Time since first domestication of dogs (27,000 y)...more would be 1/4 of Time since the start of the last glacial period (Ice Age)
Time since first domestication of horses (5,500 y)...more would be 1/20 of Time since the start of the last glacial period (Ice Age)
Time since the birth of Albrecht Durer (553 y)...more would be 1/200 of Time since the start of the last glacial period (Ice Age)
Time since the birth of Copernicus (550 y)...more would be 1/200 of Time since the start of the last glacial period (Ice Age)
Time since the Caxton's first edition of Chaucer's The Canterbury Tales (548 y)...more would be 1/200 of Time since the start of the last glacial period (Ice Age)
Time since the birth of Turing (112 y)...more would be 1/1000 of Time since the start of the last glacial period (Ice Age)
Time since the first fixed wing scheduled air service (110 y)...more would be 1/1000 of Time since the start of the last glacial period (Ice Age)
Time since the first human walked on the moon (55 y)...more would be 1/2000 of Time since the start of the last glacial period (Ice Age)
Time since first Boeing 747 entering service (54 y)...more would be 1/2000 of Time since the start of the last glacial period (Ice Age)
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