3. First off, Obon is celebrated at different times of year in different parts of Japan . The 'main' date is around August 15, but Tokyo and parts nearby is July 15, and Shikoku, Okinawa and Chugoku still use the lunar calendar so their date slides around. Second, Obon 's kind of like Thanksgiving in the US, most people leave the cities and go. Aug 10, 2022 · Bon Odori dancers wear masks during a festival at Camp Zama, Japan, Saturday, Aug. 6, 2022. (Claire Jenq/Stars and Stripes) ... the prefecture’s governor said on the eve of the Obon holiday..