Well, if you take a look at St. Paul's cathedral, there is a very good
shadow to work with.

In marine navigation, you know what day/time it is, and you calculate where
you are based on where the sun is. With this situation, you know where you
are at, so you solve for the other side of the equation.

First, the latitude here is about 51D30M49.90S

You can draw a line straight north of the dome, and calculate the time of
the exposure that way, like a sundial. some folks have responded about that
already.

Then, you can triangulate the length of the shadow, and the known height of
the dome. It's a bit uphill as you go north, I seem to recall, which may
shorten the shadow, so that should be taken into consideration.

With this, you will get the angle of the sun (declination). You now have a
known latitude, pretty close time of day, and (also pretty close) angle of
the sun.

With all of that, and this:

http://rds.yahoo.com/_ylt=A0geups.AShFJJgAg11XNyoA;_ylu=X3oDMTE2YW83ZnI 3BGNvbG8DZQRsA1dTMQRwb3MDMwRzZWMDc3IEdnRpZANNMDAxX zc0/SIG=13gfeq4il/EXP=1160336062/**http%3a//www.bath.ac.uk/%7eabsmaw/Facade/sunlight_01.pdf%23search='sun%2520position%2520glo be'

-that should get you to when the photo was taken.

Since I have to get to the gym yet today before going to some event I have
be at later, we'll let somebody else do the maths.

-RED





around January or February this year. Colin says it must be a Sunday