I have summarized Japan's national holiday, Obon.
The date of the Obon holiday is determined by the Japanese government based on Japan's National Holiday Law. Specifically, the Obon holiday dates are related to Buddhist events called "Chugenseku" and "Urabon-e," which may vary from year to year but are usually set between August 13th and 15th.
This year's Bon festival starts on August 13th (Sunday) and ends on August 16th (Wednesday). Since the 11th falls on the national holiday of "Mountain Day," and the 12th falls on a Saturday, companies that are closed on weekends can enjoy 6 consecutive holidays.
Japanese people visit their hometowns and graves during this period. If someone has passed away within a year, they definitely visit graves.
During the Bon festival, a "welcoming fire" is prepared to welcome the souls of ancestors who return to this world every summer. Additionally, an "farewell fire" is set up to bid farewell to these ancestors. With the help of the fire, the souls return directly and safely to the afterlife.