This is the 6746th most frequent Korean word.
이달에도
"이달에도" means "this month as well" or "this month too."
The word '이달에도' is used here to emphasize that similar events happened not only previously but also this month.
이달에도 많은 일이 있었습니다.
There have been many events happening this month too.
In this case, '이달에도' indicates that meetings were a pattern in previous months and continue into this month as well.
이달에도 회의가 여러 번 예정되어 있습니다.
There are several meetings scheduled this month too.
The term '이달에도' in this sentence highlights that the product's popularity was consistent in previous months and persists into this month.