Midsommer Ox Day

This is a holiday in Japan. It uses the zodiac to establish a day in the summer time, the first ox day, which is supposedly the hottest day of the year. During this day they are supposed to eat u- foods, including unagi (freshwater eel), and uri (melon). In the past, they would eat even more u- foods like udon, but it's kind of a dying holiday. It seems like it was a small holiday anyways, and now it's just a day where the demand for eel and melons increase just slightly. It's just a day where you're supposed to eat more eel than usual. That's all. I can't find any festivals or other festivities for it, you just go out to a normal restuarant or buy some eel yourself. The idea was that eel was cooling, and since the word for "ox" (cattle) is ushi, which starts with u-, then we could eat cooling eel on this day too. But again, they used to eat more u- foods on this day too. The day usually lands in August, There is also a second ox day, which is the same thing and also lands in August.