The moon carries pretty significant and specific meanings for different types of people around the world. A variety of cultures and religions used to worship the moon, and even used the different phases of the lunar cycle as a calendar. Many major religions still celebrate their holidays in accordance to the moon.
For example, Easter Sunday is celebrated on the first Sunday after the first full moon that follows the Spring Equinox. The Chinese New Year occurs on the second full moon after the Winter Solstice.