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.
Jewish Publication Society of America Version (JPS1917) - 1 Chronicles 23:31 >and to offer all burnt-offerings unto the LORD, on the sabbaths, on the new moons, and in the appointed seasons, in number according to the ordinance concerning them, continually, before the LORD;