In reply to TobyA:
> OK - sorry to drag this away from Southern Highland conditions; I love the Southern Highlands! - but is this effect not because of where we are in our timezones? i.e. Noon is an artificial construct except for those who live in Greenwich or on that line of Longitude?
Don't think longitudinal timezones are a factor - it'll be skewed right the way around the world. The further south you are the bigger the gap - eg here's a piece about the situation in New York, where the earliest sunset appears to be 7 Dec:
http://earthsky.org/tonight/earliest-sunset-today-but-not-shortest-day
and here's discussion concerning the situation in the wilds of Surrey, where the earliest sunset is 12 Dec:
http://www.theguardian.com/notesandqueries/query/0,,-201385,00.html
Further north and it closes right up, I think - eg by the Arctic Circle there's not going to be much difference between earliest sunset / shortest day / latest sunrise, although the overall rate of daylight change is greater the further north you go. There's loads of stuff online about this - it's partly to do with the fabled equation of time:
http://en.wikipedia.org/wiki/Equation_of_time
In reply to Joak:
> we departed my car around 0830. Plan A was to do something around Glen Coe, Ballachulish
We were about an hour later than you in starting to walk - dragging myself out of bed at 7am in the cold and dark felt hard enough. Like you we intended going further west (Sgiath Chuil from Auchessan was Plan A), but the west looked murky and the road suddenly worsened on that long run-in down to Lochearnhead, so we quickly changed plans. The Stuc is always a pretty good Plan B, and I'm very fond of that old out-of-fashion approach from Edinample, whether for Stuc or Vorlich or both.