Pearl Abyss ignites excitement with Black Desert Mobile Calpheon Ball events Black Desert Mobile: December 17, 1:30 AM PT.Black Desert Online: December 15, 10 PM PT.To stay informed, viewers can tune in to the developer-led live stream on Pearl Abyss’ Twitch and YouTube channels at the specified times: Attendees can anticipate significant announcements, updates, and surprises spanning PC, console, and mobile platforms. Pearl Abyss announced that the annual in-person event for Black Desert Mobile, the Calpheon Ball, is scheduled to take place in Gwangmyeong City, Korea, on December 16 and 17.