Manhattanhenge dates out.

On two days, as the Sun sets on the grid of Manhattan's streets, half the disk sits above and half below the horizon.
Half-Sun setting on the grid:
Tuesday, May 29th, 8:17 p.m.
Thursday, July 12th, 8:25 p.m.


Two other days are special: the entire Sun is on the horizon as it sets:

Full-Sun setting

Wednesday, May 30th, 8:16 p.m.
Wednesday, July 11th, 8:24 p.m.

[link to www.haydenplanetarium.org]