Manhattanhenge « Not Your Sweetie

This is how my city welcomed me as I came

Manhattanhenge (sometimes referred to as Manhattan Solstice) is a
biannual occurrence

in which the setting sun aligns with the east-west
streets of Manhattan’s main street grid. The term is derived from
Stonehenge, at which the sun aligns with the stones on the solstices.

It was coined in 2002 by Neil deGrasse Tyson, an astrophysicist at the
American Museum of Natural History. It applies to those streets that
follow the Commissioners’ Plan of 1811, which laid out a grid offset
28.9 degrees from true east-west.
At sunset, a traveler along one of the north-south avenues on the West
Side looking east can observe the phenomenon indirectly, being struck
by the reflected light of the many windows which are aligned with the
grid. An observer on the East Side can look west and see the Sun
shining down a canyon-like street.