I was flying from Belfast one day when I heard the following.
ATC; G-ZZZZ Do you have an estimate for the Shannon FIR
Pilot; Em.. None of us have a watch
ATC; I suppose we could say about 20 min from now then
Pilot; I suppose
ATC; Well i'll let you know when you have crossed the FIR then
Pilot: Thanks
Who needs a watch with that kind of service.