Okay... Decent start.... Now you need an interrupt or delay to give you exactly 1 second and variables to hold seconds minutes hours etc..
kinda like this...
loop
wait 1 second add 1 to seconds variable
if seconds is bigger than 60 make seconds zero and add 1 to minutes
if minutes is bigger than 60 make minutes zero and add 1 to hours
if hours is bigger than 24 make hours zero
display minutes
display hours
goto loop
then you can start on adjusting...