Editing April (section)

=== Movable ===

==== Variable; 2021 dates shown ====
* [[Youth Homelessness Matters Day]]
* [[Public holidays in Kiribati|National Health Day]] ([[Kiribati]]): April 6
* [[Head and Neck Cancer Alliance#Oral, Head and Neck Cancer Awareness Week|Oral, Head and Neck Cancer Awareness Week]] ([[United States]]): April 13–19<ref>[https://headandneck.org/oral-head-neck-cancer-awareness-week-early-registration-now-open/]{{dead link|date=October 2021}}</ref>
* [[List of observances in the United States by presidential proclamation#Annual special weeks recognized by presidential proclamation|National Park Week]] ([[United States]]): April 18–26
* [[Crime Victims' Rights Week]] ([[United States]]): April 19–25<ref>{{cite web |url=https://ovc.ncjrs.gov/ncvrw/ |title=National Crime Victims' Rights Week |publisher=United States Department of Justice Office for Victims of Crime |access-date=November 30, 2021 |url-status=live|archive-url=https://web.archive.org/web/20100214014130/http://ovc.ncjrs.gov:80/ncvrw/ |archive-date=February 14, 2010 }}</ref>
* [[National Volunteer Week]]: April 19–25
* [[European Immunization Week]]: April 20–26
* [[Day of Silence]] ([[United States]]): April 24
* [[Pay it forward#1999 novel, film and subsequent projects|Pay It Forward Day]]: April 28 ([[International observance]])
* [[Denim Day]]: April 29 ([[International observance]])
* [[Day of Dialogue]] ([[United States]])
* [[Vaccination Week In The Americas]]
* See: [[List of movable Western Christian observances]]
* See: [[List of movable Eastern Christian observances]]

==== First Wednesday ====
* [[Childhelp#Community outreach|National Day of Hope]] ([[United States]])

==== First Saturday ====
* [[Ulcinj Municipality Day]] ([[Ulcinj]], Montenegro)

==== First Sunday ====
* [[Daylight saving time]] ends ([[Australia]] and [[New Zealand]])
* [[Geologists Day]] (former [[Soviet Union]] countries)
* [[Kanamara Matsuri]] ([[Kawasaki, Kanagawa|Kawasaki]], Japan)
* [[Opening Day]] ([[United States]])

==== First full week ====
* [[National Library Week]] ([[United States]])
** [[National Library Week|National Library Workers Day]] ([[United States]]) (Tuesday of National Library week, April 9 in 2024)
** [[Bookmobile#National Bookmobile Day|National Bookmobile Day]] (Wednesday of National Library week, April 10 in 2024)
* [[American Public Health Association#National Public Health Week|National Public Health Week]] ([[United States]])
* [[Association of Public-Safety Communications Officials-International#Events|National Public Safety Telecommunicators Week]] ([[United States]])

===== Second Wednesday =====
* [[International Day of Pink]]

===== Second Thursday =====
* [[National Former Prisoner of War Recognition Day]] ([[United States]])

===== Second Friday =====
* [[Public holidays in Liberia|Fast and Prayer Day]] ([[Liberia]])
* [[Public holidays in Russia#Popular holidays which are not public holidays|Air Force Day]] ([[Russia]])
* [[List of festivals and events in Kamakura#April|Kamakura Matsuri at Tsurugaoka Hachiman]] ([[Kamakura]], Japan), lasts until third Sunday.

==== Second Sunday ====
* [[Children's Day#Peru|Children's Day]] ([[Peru]])

==== Week of April 14 ====
* [[Pan American Day|Pan American Week]] ([[United States]])

==== Third Wednesday ====
* [[Administrative Professionals Day]] ([[New Zealand]])

==== Third Thursday ====
* [[National High Five Day]] ([[United States]])

==== Third Saturday ====
* [[Record Store Day]] ([[International observance]])

==== Last full week of April ====
* [[Administrative Professionals Day|Administrative Professionals Week]] ([[Malaysia]], [[North America]])
* [[World Immunization Week]]

==== Week of April 23 ====
* [[Canada Book Day|Canada Book Week]] ([[Canada]])

==== Week of the [[new moon]] ====
* [[International Dark Sky Week]] ([[United States]])

==== Third Monday ====
* [[Patriots' Day]] ([[Massachusetts]], [[Maine]], United States)
* [[Queen's Official Birthday#Other countries and territories|Queen's Official Birthday]] ([[Saint Helena, Ascension and Tristan da Cunha]])
* [[Sechseläuten]] ([[Zurich]], Switzerland)

===== Wednesday of last full week of April =====
* [[Administrative Professionals Day]] ([[Hong Kong]], [[North America]])

==== First Thursday after April 18 ====
* [[First Day of Summer]] ([[Iceland]])

===== Fourth Thursday =====
* [[Take Our Daughters and Sons to Work Day]] ([[United States]])

===== Last Friday =====
* [[Arbor Day]] ([[United States]])
* [[Día de la Chupina]] ([[Rosario]], Argentina)

==== Last Friday in April to first Sunday in May ====
* [[Arbor Day|Arbour Week]] in [[Ontario]]

===== Last Saturday =====
* [[Children's Day]] ([[Colombia]])
* [[Rebuilding Together#National Rebuilding Day|National Rebuilding Day]] ([[United States]])
* [[The Fragrance Foundation#National Sense of Smell Day|National Sense of Smell Day]] ([[United States]])
* [[World Tai Chi and Qigong Day]]

===== Last Sunday =====
* [[Flag Day]] ([[Åland]], Finland)
* [[Public holidays in Turkmenistan|Turkmen Racing Horse Festival]] ([[Turkmenistan]])

===== April 27 (April 26 if April 27 is a Sunday) =====
* [[Koningsdag]] ([[Netherlands]])

===== Last Monday =====
* [[Confederate Memorial Day]] ([[Alabama]], [[Georgia (U.S. state)]], and [[Mississippi]], United States)

===== Last Wednesday =====
* [[International Noise Awareness Day]]