Ezekiel 46:3

Likewise the people of the land shall worship at the door of this gate before the Lord in the sabbaths and in the new moons.

Cross-reference

2 Chronicles 8:13 prescribes offerings on Sabbaths and new moons — directly parallel to the worship schedule described here.

Hebrews 10:19-22 contrasts old temple worship at the gate with new covenant confidence to enter the holy place through Christ.