11 days off per month, 19 working days including 3 days travelling back and forth from Seoul to your home base. During the 16 working days some days off at lay over station depending how luck you are. On the currently network flights to JFK, ORD, YYZ, DFW, LAX, SFO, SEA, LAS, HNL, SVO, DXB, FCO, MUC, GRU, SYD, AKL, MEL, BKK, MNL, KTM, PVG, TSN, PEK, HKG, NRT, and NGO.
Hope this helps