MIThenge
On several days each year, the sun sets in alignment with the Infinite Corridor and shines along its entire length. This is known as "MIThenge", a reference to Stonehenge's alignment with the sun (although the type of alignment bears a closer relationship with that of Newgrange and Maeshowe in that the sunlight passes through the mass of the buildings rather than through the standing stones of Stonehenge). These alignments occur on several days around January 31 and November 11. The phenomenon was spotted, calculated, and popularized in 1975-76 according to a Sky and Telescope article. The MIThenge site has more information and predictions for when the phenomenon will occur.
Read more about this topic: Infinite Corridor