綿わた抜ぬきの朔日ついたち

noun

first day of the fourth month in the lunisolar calendar

Rare historical term referring to a specific date in the old Japanese calendar, around early May in the modern calendar. The name literally means 'cotton-removing first day', associated with the custom of changing from padded winter clothing to lighter garments.

• 旧きゅう暦れきでは、綿わた抜ぬきの朔日ついたちは衣ころも替がえの目め安やすとされていた。

  In the old calendar, the first day of the fourth month was considered a marker for the seasonal change of clothing.