(North American countries) April 22; Created in 1970, global day of observance of the need to protect the earth.
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(obsolete, US) March 21st.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.