Apr 23, 2000
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2001
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2002
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2003
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2004
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2005
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2006
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2007
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2008
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2009
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2010
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2011
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2012
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2013
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2014
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2015
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2016
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2017
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2018
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2019
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2020
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2021
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2022
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2023
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2024
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2025
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2026
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2027
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2028
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2029
World Book and Copyright Day
United Nations observance
United States
Apr 23, 2030
World Book and Copyright Day
United Nations observance
United States