3.335640952 x 10^-9 nanoseconds If Einstein is right and light is a constant, and your measuring a straight line. You can not measure something moving faster than the constant speed of light moving through a nanometer worth of space, if you were to it would have to move faster than 3.335640952 x 10^-9 nanoseconds per nanometer. That is the maximum potential measurement of time in a nanometer on a straight line.
473,099,999,999,999,936 nanoseconds.
5.9327x10 ^19 nanoseconds
3.1536E+24 nanoseconds.
1 microsecond = 1,000 nanoseconds.
Six years = 1.89216e17 nanoseconds.
1 second = 1000000000 nanoseconds
1 day = 8.64e13 nanoseconds.
9.5 years = 299,629,999,999,999,936 nanoseconds.
24 hours = 86,400,000,000,000 Nanoseconds
20,000,000,000 nanoseconds = ~0.333 minutes.
1.5 days = 1.29600 × 1014 nanoseconds.
5 milliseconds = 5 million nanoseconds.