There were extreme wind conditions on that day and the wind was expected to get worse through the day. The pilots wanted to arrive as early as possible to beat the storm.

Source: I was on a Norwegian flight at exactly the same time and the pilot explained this logic to us and also mentioned that we were on pace to break this record. Unfortunately, the pilot couldn't land in the wind conditions and we had to divert. Good thing we had that extra fuel too as the diversion was to Copenhagen which is quite far.