Earth Day History By Arbille Period: 1969 to 1969 1969 Period: 1970 to 1970 1970 Period: 1990 to 1990 1990 Period: 1995 to 1995 1995 Period: 2000 to 2000 2000 Period: 2005 to 2005 2005 Period: 2010 to 2010 2010 Period: 2012 to 2012 2012