The reason it is considered is because municipalities give consideration to young people so that many of them who leave their home towns to take a job or to proceed to higher education can easily participate in the ceremony on the day of Obon festival or during the first seven days of the year when many of them return home, and do not need to spend money on buying a best dress (in particular, more than half of towns and villages in Iwate Prefecture hold the ceremony on the day of the Obon festival).
これは就職や進学で地元を離れる人が多いので、実家に帰省する人が多いお盆や松の内に行うほうが参加しやすい、晴れ着などに金銭をかけなくて済むという配慮が働いていると思われる（特に岩手県では、半数以上の町村がお盆に開催している）。