Mercer's Day
from Fancyclopedia 2 ca. 1959
The 31st of April. Archie Mercer once absentmindedly set a voting deadline, in OMPA, for 31 April, and Walt Willis, noting that he as OMPA President had power to deal with all emergencies ("…not just OMPA emergencies — all emergencies!") decreed that thereafter the 1st May would be known as 31 April, to be followed immediately by 2 May.