Attention earthlings: A man named David Sneider is doing his best to spread the word about a self-declared holiday celebrating our planet’s trip around the Milky Way. It’s called “Galactic Tick Day.”

In this early morning, Aug. 13, 2013 file photo, a meteor streaks past the faint band of the Milky Way galaxy above the Wyoming countryside north of Cheyenne, Wyo., during a Perseids meteor shower.(AP Photo/The Wyoming Tribune Eagle, Blaine McCartney)

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On Sept. 29, 2016 Sneider plans to celebrate the first official Galactic Tick Day — though according to his calculations, this will technically be the 235th. Sneider, who works for a startup in San Francisco, defines the holiday as “a celebration of our progress around the Milky Way.”

According to his website, it takes the earth and the rest of the solar system 225 million years to travel around the galaxy. One centi-arcsecond of this rotation is what he calls a Galactic Tick, which happens every 633.70 days (or 1.74 years).

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He marks the first Galactic Tick as the day the patent for the first telescope was filed by Hans Lippershey on Oct. 2, 1608. “This is in honor of the telescope’s power to allow us to achieve awareness of the nature of the universe,” the website reads.

Sneider said in an email that his call to make this a globally celebrated holiday is not a commercial project.

“Just doing it because our scale in the universe is amazing and it’s recognition can have untold positive repercussions for us humans,” he said.

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So if you too have an affinity for celestial happenings and want to celebrate with Sneider, he already made an event page for a party in San Francisco on Facebook.

Happy soon-to-be Galactic Tick Day!