EK is max 15 days off per month. Depending on fleet/bid group/your bids you will get anywhere from 7 to 15. Also we are restricted to max 7 days off in a row in any month (only 777 and 380 able to achieve this currently, again depending on bid group/bids).
42 days leave per year (from April 1st-March 31st). Any month you have leave your minimum days off are prorated so you may end up with less than 7.