Your messages should look like "The sunrise today in College Park, MD is at 7:45am and sunset is at 6:15pm" (obviously with the times replaced with the actual time).
Note that I will be running your code to test it, so expect a post or two to appear on your page when I do that. Be sure all your API keys and secrets are in the code and accurate.
1 point extra credit if you have a set of sunrise/sunset images and pick one each day to post with your times as part of the tweet. If you do this, make a folder for your code with your name on the folder, and include the perl file and images in the folder. I will check for this and put in the correct path to the code when I test it on my computer.