1 Kings 12:32

The feast] i.e. the Feast of Tabernacles or Ingathering, on the 15th day of the 7th month. The new feast instituted by Jeroboam was placed a month later, probably on account of the later date of the vintage in N. Palestine.

He placed in Beth-el] Bethel appears to have been, at least in later times, the royal sanctuary (Amos 7:13).