If you’re planning on being in Manhattan tomorrow, prepare yourself for a treat…courtesy of Mother Nature. The sun (part of it, at least) will set in perfect alignment with the city’s street grid and will cast its rays down every cross-street in town for the final 15 minutes of daylight.

Manhattanhenge” will begin at 8:17 PM and experts advise everyone to show up at least 30 minutes ahead of time for an optimal viewing experience.

For best effect, position yourself as far east in Manhattan as possible. But ensure that when you look west across the avenues you can still see New Jersey. Clear cross streets include 14th, 23rd, 34th. 42nd, 57th, and several streets adjacent to them. The Empire State building and the Chrysler building render 34th street and 42nd streets especially striking vistas. Hayden Planetarium

An impressive and beautiful phenomenon, this solar setting/street grid alignment occurs twice annually in NYC; the second one will occur on July 12. Additionally, on Monday, May 31 at 8:17 PM and on Sunday, July 11 at 8:24 PM, a full, rather than partial, setting on the grid will happen.

Photo: “Sunset on ‘Manhattanhenge,’when the sunset aligns with Manhattan’s street grid, pictured here on 34th Street.” © 2001 Neil deGrasse Tyson