Kelly day
n.— «The city has proposed new procedures to allow firefighters to voluntarily work on “Kelly Days” or scheduled days off that firefighters take each pay period to keep from exceeding federal labor laws on overtime. Those working on a Kelly Day, however, would still be counted as off for scheduling purposes.» —“City, firefighter talks are off” by Darla McFarland Examiner (Blue Springs, Missouri) July 17, 2003. (source: Double-Tongued Dictionary)