１１じゅういち月がつ

noun

eleventh month of the lunar calendar

Used when discussing the old lunisolar calendar; context such as 旧暦 usually makes this clear.

• 旧きゅう暦れきの十じゅう一いち月がつは「霜しも月つき」とも呼よばれる。

  The eleventh month of the old lunar calendar is also called Shimotsuki.