How April 20 became a pot day

HOUSTON, Texas (KTRK) -- Where does "420" come from?

RELATED: Everything you need to know about Harris Co.'s pot policy

According to High Times Magazine, at 4:20 p.m. today pot smokers will celebrate this unofficial holiday.

But do you know the origin of this HIGH-liday?

According to High Times Magazine, it was started by a group of kids at San Rafael High School in 1971. They would get together to smoke under the school statue. Their password was "420." Their identities were never revealed, but they are known as the "Waldos."
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