New Yorkers, after putting up with hours of pounding rain Sunday, were treated to a rare sight — a double rainbow.

The multicolored light show was spotted from different vantage points in New York and New Jersey, stretching over the Manhattan skyline, as seen in several photos posted on Instagram, Facebook and Twitter. Some on social media even thought the pair of rainbows might be their ticket to wealth after learning they didn't win the $900 million jackpot for Saturday night's Powerball drawing.

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"Most beautiful double rainbow!!!! Hoping that the powerball is my pot of gold!!!!!" wrote Twitter user JudyGood70.

No one won the grand prize in the Jan. 9 Powerball drawing, and the jackpot is estimated to grow to $1.3 billion, according to lottery officials. Twitter user gasparr987 alluded to that as he wrote that the double rainbow would bring him luck for Wednesday's drawing, tweeting: "As you buy your powerball ticket you see a double rainbow #1.3BillionRicher"

A double rainbow is actually an optical phenomenon caused by a second reflection inside a water droplet, according to "This 're-reflected' light exits the drop at a different angle. ... This is why the secondary rainbow appears above the primary rainbow," NASA's site explains.

A double rainbow stretches over the Manhattan skyline on Sunday, Jan. 10, 2016. Photo Credit: Kristen Melega

And, it adds, you'll notice that the secondary rainbow will have the order of colors reversed, with red on the bottom and violet on the top.