On Tanabata, you're supposed to write wishes on slips of paper and wrap them in bamboo leaves, and later on you either set them afloat or burn them so that the two lovers can grant them when they meet. Since it isn't cloudy or raining, every wish written'll get granted! At least, that's how it usually goes. I know there's a celebration in Goldenrod, but I'm too far from there so I thought I'd just wish everyone well.

Oh, and it has a song too! I'd sing it for you, but I'm not very good at it...