Free Slurpees for 711's 86th Birthday - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

Free Slurpees for 711's 86th Birthday

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WALLA WALLA, Wash. - For one convenience store chain Thursday was an international holiday. It was the 11th day of the 7th month, otherwise known as 711 Day.

The company celebrated 86 years and gave away free 7.11 ounce Slurpees from 11 a.m. until 7 p.m. It's estimated seven milllion Slurpees were given away.

By some counts, enough Slurpees are sold each year to fill 12 Olympic sized pools and almost half of all that are sold are purchased between June and August from 4 p.m. to 11 p.m.