This display error has been around for a while, frequently addressed by the paying clients but not fixed. So much about their care for CCs.
The error starts when the tourney has been set up - it will display (in the game window) a premature ending time. Here, it is about the difference to PDT, nine hours. Would be interesting to see which gap you see...
When this curtailed time has run down, it continues from 50 days...