Average about 15 days working a month. Those 15 days working can be in the middle of the night (2am -3am) and through muliple time zones.
Most of the pilots here come from low tier airlines and they are happy with working "only" 15 days a month but as any wise airline pilot knows the kind of flying we are doing we should only be working 8-11 days a month. That is a far cry from what we are actually doing.