On the big globes of the world that used to be seen mounted on a yoke and pedestal,
with the continents and oceans labelled, there was a figure of eight shaped diagram
wih the months labelled. I once saw on Internet a series of exposures on the same
film, made by a serious amateur astronomer, which he mounted in an attic skylight
aimed at the zenith, with exposures made roughly weekly, when it was not cloudy,
at noon time. The images of the sun each week of the year fell in an enlongated
figure of eight.
While out on my walk just now, I remembered the word. Let's see how many of you
can find it.

When you give up, you can see it at:
http://antwrp.gsfc.nasa.gov/apod/ap020709.html