I learned a new word today - analemma

In astronomy, an analemma (pronounced /ˌænəˈlɛmə/, Greek for the pedestal of a sundial) is a curve representing the angular offset of a celestial body (usually the Sun) from its mean position on the celestial sphere as viewed from another celestial body (usually the Earth) relative to the viewing body's celestial equator.

An analemma is that figure-8 curve you get when you mark the position of the Sun at the same time each day for one year.
Owing to the tilt of Earth's axis (23.439°) and its elliptical orbit around the Sun, the relative location of the sun above the horizon is not constant from day to day when observed at the same clock time each day. Depending on one's geographical latitude, this loop will be inclined at different angles.

The figure below is an example of an Earth analemma as seen from the northern hemisphere. It is a plot of the position of the sun at 12:00 noon at Royal Observatory, Greenwich, England (latitude 51.4791°N, longitude 0°) during the year 2006. The horizontal axis is the azimuth angle in degrees (180° is facing south). The vertical axis is the altitude in degrees above the horizon.

The technique requires a Sun Filter over the lens of a camera that shoots a picture at the same time every day or week for a full year. This is done on the same piece of film. finally a picture is shot of the area.

This is an actual photograph(s) shot at the Temple of Apollo (550-540 BC) at Ancient Corinth.

For the photographicly interested here are the details.

Date: Jan 07, 2003 - Dec 20, 2003 09:00:00 UT+2

Location: Athens, Greece (38.2997° N, 23.7430° E)
Equipment: Canon A-1, Canon FD 24 mm @ f/11, Fuji Super HQ 200, Baadar Solar Filter ND5
Exposures: 1/60 sec, 47 multiple exposures + , 1 foreground exposure
Software: Photoshop V6
Processing: Levels, Brightness/Contrast, Layers, Resampling (25%), JPG Compression

Many more of these photos can be seen here. Astro-Solar-Analemma

The day has been good. At 8:00 am I have already learned something.