I know in Milwaukee Wisconsin, Oldies station 95.7 WRIT always flips to Christmas, to complete with 99.1 WMYX every year. It used to be WLTQ (Light 97.3), until then CC flipped formats to complete with 96.5 WKLH. So to keep Christmas music in the station's lineup, they flipped WRIT to Christmas after 2003 or 2004. In Chicago, 93.9 WLIT is the only city grade station that has Christmas music, while NWIN station 107.1 WZVN Lowell Indiana goes Christmas, while normally being either AC or Bright AC (or whatever it's called now, since they dropped Westwood One to go with Jones, then Westwood One sold their satellite radio service, which was renamed Dial Global, then Dial Global buys Jones Radio. Now Cumulus buys out Dial Global).