How long does each Battle Concert event last? August 16, 2019 20:05 Updated The events we currently have planned will last for thirty (30) days. Related articles Where can I buy the Special Event Collections? Why can’t I buy the Event Collections with DragonCrystals or AdventureCoins? What is the All Access Pass? Can I still farm the drop items for the Battle Concert after the event? What does the Backstage Pass do?