Following on from my success on finding the fault with ground networks, Croydon seems to be having 2 new problems.
1. Slots are not getting released when flights are being deleted.
2. The airport night time restriction is from 02:01 to 07:59. The UTC time is correct but all the airports I checked in Cal seem to out by 2 hours. Just checked Dalian and Hamburg and their night time shutdown is also affected.
And there was I thinking I had retired from spending all of my working life in IT and sorting out coding problems. Quite enjoyed finding these faults.