Subject: Length of the day and earths rotation

Ok, you'll prob have to edit this to make it nore succint but here 
goes......
  The earth spins round on an axis and that causes day and night and 
if it wasn't also orbiting the sun the period between Noon one day and 
Noon the next day would always be the same (i.e. at the same time of 
day the sun would be directly overhead). But its not, because its also 
orbits the sun which means that it has to spin a little bit further 
the next day for the sun to be overhead right? It changes by roughly a 
degree a day (because it takes 365 days for one orbit which is close 
enough to 360 I guess). 

The question is: if the sun changes a degree a day and it started 
directly overhead, then 180 days down the line shouldn't noon be 
midnight, or 90 days down the line noon would be sunrise etc etc?  
what have i missed as i have obviously missed something, coz noon 
doesn't become midnight does it?

Re: Length of the day and earths rotation