I take a look at the news in Japanese each morning. (From this site.)
As with newspapers in English, I focus on the comic strips. Which is how I found out that today is special (Thanks, ひなちゃん!). Today is the 15th day of the 8th month on the Japanese lunar calendar. It’s a full moon, and a day when offerings are made to the moon. The offerings look like this:
Unfortunately, most of the information about this day is in Japanese, so me trying to find out what it’s all about is a bit like someone trying to find out about American Thanksgiving by looking at those construction-paper turkeys you make by tracing your fingers and watching some football. There is, however, quite a nice article with lots of pictures at Taste of Japan.
(I should take the opportunity to point out that although Japanese people see a rabbit on the moon, I still can’t see it.)