Not sure what to say about checking the tire pressure, removing the valve cap and putting a tire gauge on the stem always seemed to work for me.
As to the clock :
19. Push Button for Time Setting
To adjust the time display, turn the key in the ignition
switch to the ON/RUN or ACC position. The ****/
button located just to the left of the clock is used to
change the time. Pull out the **** and turn it to the left
for hour adjustment; pull out the **** and turn it to the
right for minute adjustment.