Frostfire Mine is a solo event that is available every two weeks. You can register and participate in the event on the same day.
There are 6 time slots that can be registered, and all players ≥Lv. 16 Furnace are eligible.
Each player can only register for one time slot that has not started/is not locked. Registration opens 10 minutes before a time slot starts. You are free to change your time slot.