time

365.25 days is a year
no leap day could be one fourth of the days of the year plus one
1/4 days +1
or
IS THAT INCORRECT?
no leap day is four times the days plus one.
365.25*4 = 1461 days

how to define a second:
the time it takes for light to travel 1000 times the average length of a human being
~~human = (X average race height)/X
time it takes for light to travel 10000 times the maximum width of a water droplet
one million times the half life of an atom. i cant find which.
round a converted second (second/unit rounded to the nearest base 10)

time should have an effect on length and volume (many types of measure)