It was definitely on a Monday, back then big fights took place during the week. Hagler-Hearns, Hearns-Leonard, Tyson-Spinks, Leonard-Hearns II, Leonard-Duran III, all of these fights took place on a Monday. If I remember correctly fights also took place on a Thursday as well. Hollyfield-Douglas and Bowe-Hollyfield both took place on a Thursday.