Adding Sendai, Japan to the list

Sendai is a city on the central-north coast of Japan, in the Tōhoku region. I was looking up its prefecture on Wikipedia because I love their flag, and ended up going down a rabbithole about its festivals. They’re most famous for the Sendai Tanabata Festival. According to the official website: Sendai Tanabata Festival has been passed down through the generations as a traditional event that dates back to the era of Date Masamune, the first lord of Sendai Domain. Today, the festival is known nationwide for its elegance—derived from an ancient Japanese star festival—as well as its gorgeous decorations. Tanabata festivals are traditionally held throughout Japan on July 7, a date based on the old Chinese calendar. The Sendai Tanabata Festival, however is held from August 6 to 8, based on a calendar that is one month later than the old Chinese calendar, in order to keep to the seasonality of the old festival. During the festival, the entire city—including central Sendai and neighboring…