Subject: I created a sundial in which I record its shadow everyday @ the same time

and @ the same exact place (as best I can). I noticed that the shadows that I 
have traced each day are different why? I know that perhaps my placement of my 
sundial (even though marked) may not be exact. And my time I measure this at 
6;29pm may not be exact due errors in my wristwatch which is not exact but as 
close as I can get it. Also because I am in school during the day, I would have 
liked to take a recording at 12:00 noon.  Would it be possilbe If I did that no 
shadow would occur due to the sun being exactly perpendicular to the Earth where 
I live in Michigan? If you could answer my question ASAP I would appreciate 
this.  I have done lots of research on this but I cannot find any information 
about the different shadows that occur.  My project is due this Thursday, June 
4. 1998.   Thank-you so much.  Therese

Re: I created a sundial in which I record its shadow everyday @ the same time