Base units that are decimal divisions of the day , such as 1\/10 , 1\/100 , 1\/1000 , or 1\/100 ,000 day , or other divisions of the day , such as 1\/20 or 1\/40 day , have also been suggested , with names such as tick , meck , chi , chron , moment , etc. . Base units equivalent to decimal divisions of the day , such as 1\/10 , 1\/100 , 1\/1000 , or 1\/100 ,000 day , or other divisions of the day , such as 1\/20 or 1\/40 day , have also been proposed , with names such as tick , meck , chi , chron , moment , etc. , and multiple and submultiple units formed with metric prefixes .