Time of day

If time is told by the sun
then when the sun goes down are we out of time?
at sunset have our doings done the full circle?
Are we getting ready to start again?
does it ever change?
when does it stop going from 3 to 4 ,6 to 7, 10 to 11?
does anything ever really change?
are we stuck in this routine of time and sun and life?
will we ever get out?