How often does coach outlet have the 30% off sale already discounted items?

i went to the coach outlet mall in milpitas ca and they were having a sale 30% off the already discounted items there sweet deal i wanted to know how often do they have this sale i know that it is already discounted because its an outlet but getting more off the already discounted items is great i purchased a $360 bag for $130 it was 50% off the $360 plus 30% off that because of the sale they were having