月末に近づいている。

The month is drawing to an end.

今月末に僕の家にきなさい。

Come to my house at the end of this month.

６月末に参加者を募ったら１週間弱で約５００席が予約でいっぱいになった。

When participants were sought at the end of June all, about 500, seats were reserved in under a week.