interlunary

/ˌɪntərˈluːnəri/
adjective
  1. Relating to the time between the old moon and the new moon when the moon is not visible.
    • During the interlunary phase, the moon is completely hidden from view.
    • The interlunary period is a time of darkness in the night sky.
    • Ancient farmers sometimes planned planting around the interlunary days.
Synonyms