Answer: apri

AnswerCrossword Clue
APRIFools' day, maybe
APRIDay for pranks (abbr.)
APRIFools' Day?
APRIAll Fools' Day (abbr.)
APRIDate for a prankster
APRIAll Fools' Day: Abbr.
APRIAbbreviated date.
APRIPrankster's pet day: Abbr.
APRI2nd qtr. starter
APRIBig day in a prankster's yr.