These flavors are only available during these months:

January: Egg Nog & Peppermint
February: Cinnamon
March: Irish DeMenthe
April: Crunch Peanut Butter
May/June: Strawberry
July/August: Blueberry
September: Cranberry
October: Dark Orange
November: Pumpkin Pie
December: Egg Nog & Peppermint