Who else is excited for this? I am! I've been doing research on why it happens, and here's some of what I've figured out: The Earth actually takes 365.2442 days to orbit the Sun, and early people noticed that the stars were out of alignment because of that extra .2442 day. So they created an extra day for when there was enough "extra bits" to make a whoke day out of! Pretty cool, right? Feel free to share your thoughts, theories, and research on this astronomical phenomenon!