What I can remember when I worked at Target, it's been a while but I think it's still the same schedule for regular markdowns. I don't remember about how the holiday markdowns go schedule wise. All stores may not have the same schedule though so just keep a look out.
Mondays ~ Childrens, Electronics, Stationary
Tuesdays ~ Women's, Pets, Market, Domestics
Wednesdays ~Men's, Toys, Lawn/Garden, Toys, HBA
Thursdays ~ Shoes, Sporting Goods, Lingerie
Fridays ~ Jewelry, Automotive, Cosmetics, Hardware
Mondays ~ Childrens, Electronics, Stationary
Tuesdays ~ Women's, Pets, Market, Domestics
Wednesdays ~Men's, Toys, Lawn/Garden, Toys, HBA
Thursdays ~ Shoes, Sporting Goods, Lingerie
Fridays ~ Jewelry, Automotive, Cosmetics, Hardware