Ensures there is a max of

hours 24
minutes 60
seconds 60
millis 1000
micros 1000
nanos 1000

Any additional values are bubbled up to the next 'bucket'.

ie
hours 0
minutes 15
seconds 4123
millis 0
micros 0
nanos 123456

Becomes
hours 1
minutes 23
seconds 43
millis 0
micros 123
nanos 456