Opening And Closing
Opening And Shutting
noun, verbal noun
Opened and closed things are opening and closing.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
開閉時刻の変更は、小さな混乱と誤解を招いた。
Changing the opening and closing times caused a little bit of confusion and misunderstanding.