On 2014-06-28, at 11:07, Steve Hobson wrote: > You probably already know this but local time is ambiguous around when the > clocks "go back". That means there is typically a one hour time range each > year within which the local time cannot be converted to UTC without > additional information. > I'd call it a two hour time range.
The "additional information" may be supplied by the time stamps themselves. If the time stamps appear in chronological order and events are dense enough that one can rely on one's occurring in each of the two ambiguous hours, then a decrease between two recorded time stamps implies the the former is Daylight time; the latter standard. -- gil
