Sunrise Shines its Spotlight...

This morning the sunrise cast its light the length of the hall, through the front room and onto this curtain of fabric.
A week ago the sun rose 15 minutes later and a little more to the south and it didn't shine on this material. A week from now the sun will be rising 20 minutes earlier and a few more degrees to the east and this little light show will happen in another part of the house.
That's what happens when the sunrise has to move along 120° of horizon in 6 months!