Turbo Trainer 54:35 
Avg Cadence = 98rpm
Temperature display in the car was saying 6 degrees so thoughts of going outdoors on a bike was easy to change to pedalling indoors. Heavy shower of rain too while I was on the bike so good decision.
Both Cadence and HR senses dropped out after around 35 minutes and again near the end. Stopped the watch the first time to see if I could it going again.
Left knee I could feel but not so much to consider stopping. Been a while since I did some Turbo, sadly not by choice.