Celebrate '713 Day' with this quiz about Houston
The 13th day of the seventh month of the year is better known to people in Houston as "713 Day."
While it's not an official holiday, the date mirrors Houston's first area code, 713. Today, the Houston metropolitan area uses a total of four area codes.
Think you're a true Houstonian? Take our quiz and find out just how much you know about Space City.
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