The Feast of the New Moon: Observed with Great Solemnity
Source: TTT
1 Chronicles 23:31
Whenever burnt offerings were presented to the LORD on the Sabbaths, New Moons, and appointed feasts, they were to serve regularly before the LORD in the numbers prescribed for them.
2 Chronicles 2:4
Behold, I am about to build a house for the Name of the LORD my God to dedicate to Him for burning fragrant incense before Him, for displaying the showbread continuously, and for making burnt offerings every morning and evening as well as on the Sabbaths, New Moons, and appointed feasts of the LORD our God. This is ordained for Israel forever.
2 Chronicles 8:13
He observed the daily requirement for offerings according to the commandment of Moses for Sabbaths, New Moons, and the three annual appointed feasts—the Feast of Unleavened Bread, the Feast of Weeks, and the Feast of Tabernacles.
2 Chronicles 31:3
The king contributed from his own possessions for the regular morning and evening burnt offerings and for the burnt offerings on the Sabbaths, New Moons, and appointed feasts, as written in the Law of the LORD.