Time officially started with the first second of 1970 ;-)

''And ends some time in 2106, if you're using 32-bit unsigned integers, or some time in 2038, if you're using 32-bit signed integers.''

''That would be the dawning of the Age of Aquarius, I would imagine.''

A couple of MegaSeconds after the first successful mission to another celestial body, according to DeepnessInTheSky.
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UnixWay, LinguaFrancaPattern