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1.
The day of the month dedicated to a certain Mike Windy's (actual name confidential) mispronunciation. He was trying to pronounce "Salival" as in the box set of sorts by Tool. "Salvo" kept coming out, however, and his horrible English or interpretation of English led to much confusion for 10 minutes.

Every 3rd of the month is Salvo Day, and February 3rd is Grand Salvo Day.
Well, shucks, son, you really know how to make an old man like me happy on Salvo Day.
by Steven April 07, 2004