DateOrganisation founderPeriodCountry where applicableHoliday typeDescription .AprilAstronomical Association of Northern California1973 - presentUnited States of AmericafunnyAstronomy Day 1.AprilInternationalfunnyFun at Work Day 2.AprilInternationalfunnyInternational Children's Book Day 3.AprilInternationalfunnyWalk to Work Day 3.AprilInternationalfunnyWorld Party Day 4.AprilInternationalfunnyTell a Lie Day 5.AprilInternationalfunnyRead a Road Map Day 5.AprilInternationalfunnyFirst Contact Day 6.AprilInternationalfunnySorry Charlie Day 9.AprilInternationalfunnyBe Kind to Lawyers Day 10.AprilInternationalfunnySiblings Day 11.AprilInternationalfunnyBarbershop Quartet Day 12.AprilInternationalfunnyGrilled Cheese Day 12.AprilInternationalfunnyYuri's Night 13.AprilInternationalfunnyScrabble Day 14.AprilIzzy GesellInternationalfunnyInternational Moment of Laughter Day 16.AprilInternationalfunnyEggs Benedict Day 16.AprilInternationalfunnyWear Pajamas to Work Day 18.April2007 - presentInternationalfunnyRecord Store Day 18.AprilNational Society of Newspaper ColumnistInternationalfunnyColumnist Day 20.AprilInternationalfunnyLook Alike Day 22.AprilInternationalfunnyJelly Bean Day 23.April2011 - presentInternationalfunnyImpossible Astronaut Day 23.AprilInternationalfunnyLover's Day 23.AprilGloria Steinem and the Ms. Foundation for Women1993 - presentInternationalfunnyTake Our Daughters and Sons to Work Day 23.AprilInternationalfunnyTake a Chance Day 24.AprilOffice of the Mayor of New YorkCity and Departament of Cultural Affairs2003 - presentInternationalfunnyPoem in Your Pocket Day 25.April2002 - presentInternationalfunnyDNA Day 26.AprilInternationalfunnyPretzel Day 26.AprilInternationalfunnyRichter Scale Day 27.AprilInternationalfunnyWorld Pinhole Photography Day 29.April1913 - presentInternationalfunnyZipper Day 30.April1990 - presentInternationalfunnyHonesty Day |
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