Battleground Holidays

From wow.incgamers.com

Battleground "holidays" have been added to Warsong Gulch, Alterac Valley and Arathi Basin. Holidays occur during most weekends, starting on Thursday night at midnight and continuing until Tuesday morning. During a holiday, emissaries from that Battleground will be found
in the major cities, and honor/faction rewards for performing objectives in that battleground are increased.