It means you can only access the quest between 06:00 and 11:00. The date was a bug and it was removed :P
This means we need to complete the quest before the time expires or we need to start it again?
The timeframe quests normally don´t give the day in the hourglass... this one does.
They're probably meant to be seconds but they somehow ended as hours. It'll be fixed either today or tomorrow.