Redeem these lift tickets for a day or night lift ticket during the 2009-10 or 2010-11 season, except during the following blackout dates. In 2009-10 season: Dec 26-Jan 3, Jan 15-18, Feb 13-15, Feb 18-21. In 2010-11 season: Dec 26-Jan 2, Jan 14-17, Feb 19-21, Feb 24-27.