>>533695528
Unfortunate...
>>533695328
>>533694904
Anyways, the atomic clock and Earth's rotation are suitable answers. The current definition of the second is
>The time taken for an unperturbed caesium-133 atom to vibrate 9192631770 times
I also would have accepted "1/60 of a minute"
My apologies for the vague question, but thank you for still participating. What should next week's quiz be about?