This was my bike scare of the week. I was in the Madison Street bike lane between two buses and the sun was staring down at us, blocking our vision.

Or at least my vision. Bus drivers tend to have visors. I had my hand. Adler Planetarium describes it:

This phenomena occurs as the Sun sets right in the middle of Chicago’s East-West streets – which only occurs during the vernal and autumnal equinox. If you are viewing the sunrise or sunset downtown, it will be framed by Chicago’s beautiful architecture along these streets – hence, “Chicagohenge.”

Chicagohenge should occur on September 25, 2013.