Sports Day
noun
Remember how 運動 means "exercise?" When you meet with a bunch of other people to exercise it's called Sports Day! This is a day at schools in Japan where everybody does physical stuff together! It's fun and also very tiring!
うんどうかい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
悪天こうで、折角楽しみにしていた運動会が中止になってしまいました。
The bad weather spoiled Sports Day, which we had really been looking forward to.
運動会の日、晴れるといいですね。
I hope it’s sunny on the day of the sports festival.
運動会の日の朝に、今日は都合が悪いから運動会を明日に変えることはできないかって聞いてきた親がいて、びっくりしたよ。
We were surprised that on the morning of Sports Day, there were parents asking if we could change it to tomorrow just because they couldn't make it that day.