五ご明後日あさって

noun, adverb

four days from now; five days from now (regional)

Refers to the day four days after today in standard usage, but in some regions it means five days from now. Used both as a noun and adverbially.

• 五ご明後日あさっては友とも達だちの誕たん生じょう日びだ。

  Four days from now is my friend's birthday.

• 地ち域いきによっては、五ご明あ後日さってが五いつ日か後ごを指さすこともある。

  Depending on the region, 五明後日 can refer to five days from now.