noun
after New Year's Week; after the New Year's pine decorations are removed
Refers to the period after January 7th (or 15th in some regions), when the traditional kadomatsu (pine decorations) are taken down, marking the end of the main New Year's celebrations.
松過ぎには、もう正月気分は抜けている。
By the time the New Year's pine decorations are gone, the festive mood has already faded.
松過ぎの静かな神社を散歩した。
I took a walk through the quiet shrine after the New Year's Week.