休きゅう日じつ明あけ

noun

the day after a holiday

Refers to the first working or school day after a holiday or break, often with a connotation of returning to routine.

• 休きゅう日じつ明あけの月げつ曜よう日びはいつも忙いそがしい。

  Mondays after a holiday are always busy.

• 休きゅう日じつ明あけで、まだ体からだがだるい。

  It's the day after a holiday, and I still feel sluggish.