please check if this is really intended:

The last Epic Boss day is the first day of the battle. So guilds will have to kill at least 170 bosses for the guild quest and the wrapper using the same health that is needed for battle.
Since it is the last day of EB most player will need several (or a lot of) hits to kill a boss - this will definitely kill the fun during battle.

please change the event time to 6 days so that it ends before battle-start.