Sirach 43:6-8

New Revised Standard Version Catholic Edition

⁶ It is the moon that marks the changing seasons,^[a]
    governing the times, their everlasting sign.
⁷ From the moon comes the sign for festal days,
    a light that wanes when it completes its course.
⁸ The new moon, as its name suggests, renews itself;^[b]
    how marvelous it is in this change,
a beacon to the hosts on high,
    shining in the vault of the heavens!