For two days every year, a phenomenon occurs over the island borough of Manhattan, where the azimuth of the sun as it rises or sets aligns with the city’s grid system. When this happens, you can observe the full sun between the concrete and glass canyons running north and south. The first person to publicly note and name the event, Manhattanhenge (a play on Stonehenge), was astrophysicist, science communicator, and native New Yorker Neil DeGrasse Tyson, as early as 2003, according to the word wonks at Oxford English Dictionary.

This year’s Manhattanhenge occurred on July 13th, and while New Yorkers look towards Jersey, Coca-Cola is taking the opportunity to debut the new look and flavor for Coke Zero, handing out samples and flying a banner across the sky that asks “New Coke Zero Sugar, best Coke ever?”