I have it in mind to eventually compile a list of dates when each of the London pics could not have been taken.
Starting with CH1 from Q post 2797, I am zeroing in on DECEMBER.
FACT: At the beginning of DECEMBER ‘dawn’ begins at nearly 7:05am with actual sunrise occurring at 7:43am. This occurs progressively later each day until by the end of the month dawn occurs at 7:26am with actual sunrise at 8:05am. Bear in mind the CH1 pic being an apparent morning shot.
I have taken a survey of the weather in London for December 2013 and have found several dates that can be eliminated if CH1 is a morning pic. Will post those in separate posts to follow.
If CH1 is early morning at dawn or even later in the morining, then it may be possible to exclude 9DEC as FOG was logged at 7:50 and 8:50am. The next 3 days are much stronger for evidence to exclude. DEC10, 11 and 12 had lengthy FOGGY conditions persisting from dawn after NOON.
DEC 21, 23, 30 and 31 all had ongoing persistent rain from DAWN to after NOON.
Will post those sauces next.
Posting those 4 foggy DECEMBER mornings first.
Now posting those 4 rainy DECEMBER mornings. (Which would exclude CH1 on those dates.)
Am happy with these dates as they do not exclude our favorite Christmas dates for nearby LISAMI6 and EMBANKMENT pics.