Saturday Build - and Contest Hint

We are planning to work on cardboard-boat-building on Saturday, starting about 10:30 am. Science rooms 107 and 120. We will probably work for quite a while, perhaps until we run out of cardboard, so if you aren't up by 10:30 on a Saturday, stop by later.

Speaking of running out of cardboard, we're still looking for more - if you have any large boxes, bring them by. Also, cross your fingers that my fridge is really dead this time, so I can donate a refrigerator box. (What's the smiley for mixed feelings?)

It'd be nice to know who is coming, especially if we end up getting something for lunch, so send me or Alaina an e-mail, or leave a comment here for all to see. However, if you just show up out of the blue, we certainly won't turn you away.
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With four hours to go in the blog contest and no attempts at an answer, I guess I'd better give a hint: Think about what makes a full moon fully illuminated - where is the sun as the full moon is rising?