@ Vic
"> it would have to include an accurate local time as well as running to UTC
Nonsense.
If you know UTC and you know which timezone you are in, you can derive localtime precisely."
I quoted your first part as it includes the bit you claim is nonsense and then you proceed to say exactly the same thing.
UTC provides the baseline, local time is derived from that and recorded accordingly to allow for time changes.
For evidential purposes you cannot derive a time after the fact it needs to be logged at the time of the event so a call record in summer time would show UTC at X and local at X + 1
and thats why, with the current approach they have if they lose an hour and the time of the call is not accurately recorded then a suspect could argue/show they where not at the scene at the time of the call should the log be produced in evidence.