What is the significance of the New Moon to YHWH and his people?

The new moon is mentioned many times in scripture. It is used to identify the beginning of a new month, to calculate YHWH's sanctified feast days, and it was also a time when YHWH would communicate with his prophets. Do the new moons mean anything beyond this to believers? Is the new moon one of YHWH's set-apart times like his Sabbaths and his feast days? How are YHWH's people supposed to observe the full moon? Let's look at the many verses that mention the new moon and explore whether or not today's bible believers should celebrate the new moons and how we should be observing them. Shalom