Editing April

{{short description|Fourth month in the Julian and Gregorian calendars}}
{{about|the month}}
{{Redirect|Apr.|other uses|APR (disambiguation){{!}}APR}}
{{pp-move-indef}}
{{Use mdy dates|date=June 2013}}
{{Calendar}}

'''April''' is the fourth month of the year in the [[Gregorian calendar|Gregorian]] and [[Julian calendar]]s. Its length is 30 days.

April is commonly associated with the season of [[spring (season)|spring]] in the [[Northern Hemisphere]], and [[autumn]] in the [[Southern Hemisphere]], where it is the seasonal equivalent to [[October]] in the Northern Hemisphere and vice versa.

== History ==
[[File:Breviarium Grimani - April.jpg|thumb|April, Brevarium Grimani, fol. 5v (Flemish)]]

The Romans gave this month the [[Latin]] name ''[[Aprilis]]''<ref name=Chambers>"April" in ''[[Chambers's Encyclopædia]]''. London: [[George Newnes Ltd|George Newnes]], 1961, Vol.&nbsp;1, p.&nbsp;497.</ref> but the derivation of this name is uncertain. The traditional etymology is from the verb ''aperire'', "to open", in allusion to its being the season when trees and flowers begin to "open", which is supported by comparison with the modern Greek use of [[wikt:άνοιξη#Greek|άνοιξη]] (''ánixi'') (opening) for spring. Since some of the Roman months were named in honor of divinities, and as April was sacred to the goddess [[Venus (mythology)|Venus]], her [[Veneralia]] being held on the first day, it has been suggested that Aprilis was originally her month '''Aphrilis''', from her equivalent Greek goddess name [[Aphrodite]] (''Aphros''), or the [[Etruscan language|Etruscan]] name ''[[Aphrodite|Apru]]''. [[Jacob Grimm]] suggests the name of a hypothetical god or hero, ''Aper'' or ''Aprus''.<ref>Jacob Grimm ''Geschichte der deutschen Sprache''. Cap. "Monate"</ref>

April was the second month of the earliest [[Roman calendar]],<ref name="Chisholm1911"/> before ''[[Ianuarius]]'' and ''[[Februarius]]'' were added by King [[Numa Pompilius]] about 700&nbsp;BC. It became the fourth month of the calendar year (the year when twelve months are displayed in order) during the time of the [[decemvirs]] about 450&nbsp;BC, when it was 29&nbsp;days long. The 30th day was added back during the reform of the calendar undertaken by [[Julius Caesar]] in the mid-40s&nbsp;BC, which produced the Julian calendar.

The [[Anglo-Saxons]] called April ''ēastre-monaþ''. The [[Venerable Bede]] says in ''[[The Reckoning of Time]]'' that this month ''ēastre'' is the root of the word [[Easter]]. He further states that the month was named after a goddess ''[[Eostre]]'' whose feast was in that month. It is also attested by [[Einhard]] in his work ''[[Vita Karoli Magni]]''.

[[St George]]'s day is the twenty-third of the month; and [[St Mark]]'s Eve, with its superstition that the ghosts of those who are doomed to die within the year will be seen to pass into the church, falls on the twenty-fourth.<ref name="Chisholm1911">{{EB1911|inline=1|wstitle=April|volume=2|page=230}}</ref>

In [[History of China|China]] the symbolic ploughing of the earth by the emperor and princes of the blood took place in their third month, which frequently corresponds to April.<ref name="Chisholm1911"/> In Finnish, April is ''huhtikuu'', meaning ''[[slash-and-burn]] moon'', when [[gymnosperm]]s for beat and burn clearing of farmland were felled.

In [[Slovene language|Slovene]], the most established traditional name is ''mali traven'', the month when plants start growing. It was first written in 1466 in the [[Škofja Loka Passion Play|Škofja Loka manuscript]].<ref name="KoledarDPG2007">{{cite web|url=http://www.dobrova-polhovgradec.si/doc/priponke/koledar%20prir%2007%20zadnji.pdf |title=Koledar prireditev v letu 2007 in druge informacije občine Dobrova–Polhov Gradec |language=sl |trans-title=The Calendar of Events and Other Information of the Municipality of Dobrova–Polhov Gradec <!-- |issn=C505-5857 --> |publisher=Municipality of Dobrova-Polhov Gradec |year=2006 |url-status=dead |archive-url=https://web.archive.org/web/20131102060918/http://www.dobrova-polhovgradec.si/doc/priponke/koledar%20prir%2007%20zadnji.pdf |archive-date=November 2, 2013 }}</ref>

The month April originally had 30 days; [[Numa Pompilius]] made it 29 days long; finally, [[Julius Caesar]]'s calendar reform made it 30&nbsp;days long again, which was not changed in the calendar revision of [[Julian calendar|Augustus Caesar]] in 8&nbsp;BC. 

In [[Ancient Rome]], the festival of [[Cerealia]] was held for seven days from mid-to-late April, but exact dates are still being determined. [[Feriae Latinae]] was also held in April, with the date varying. Other ancient Roman observances include [[Veneralia]] (April 1), [[Megalesia]] (April 10–16), [[Fordicidia]] (April 15), [[Parilia]] (April 21), [[Vinalia|Vinalia Urbana]] (April 23), [[Robigalia]] (April 25), and [[Serapia]] (April 25). [[Floralia]] was held April 27 during the [[Roman Republic|Republican era]], or April 28 on the [[Julian calendar]], and lasted until May 3. However, these dates do not correspond to the modern [[Gregorian calendar]].

The [[Lyrids]] [[meteor shower]] appears on April 16 – April 26 each year, with the peak generally occurring on April 22. The [[Eta Aquariids]] meteor shower also appears in April. It is visible from April 21 to May 20 each year, with peak activity on or around May 6. The [[Pi Puppids]] appear on April 23, but only in years around the parent comet's [[perihelion]] date. The [[Virginids]] also shower at various dates in April.

The "Days of April" (''journées d'avril'') is a name assigned in French history to a [[July Monarchy#April 1834 insurrections|series of insurrections]] at Lyons, Paris and elsewhere, against the government of [[Louis-Philippe of France|Louis Philippe]] in 1834, which led to violent repressive measures, and to a famous trial known as the ''procès d'avril''.<ref name="Chisholm1911"/>

== Symbols ==
[[File:Diamond.jpg|alt=Faceted diamond|thumb|Faceted [[diamond]]]]April's [[birthstone]] is the [[diamond (gemstone)|diamond]]. The [[birth flower]] is the [[common daisy]] ''(Bellis perennis)'' or the [[sweet pea]].<ref>Kipfer, Barbara Ann (1997) ''The Order of Things''. New York: Random House</ref><ref>{{cite web|url=http://www.shgresources.com/gems/birthflowers/|archive-url=https://archive.today/20120911093344/http://www.shgresources.com/gems/birthflowers/|url-status=dead|archive-date=2012-09-11|title=U101 College Search}}</ref> The [[zodiac]] signs are [[Aries (astrology)|Aries]] (until April 19) and [[Taurus (astrology)|Taurus]] (April 20 onward).<ref>The Earth passed the junction of the signs at 14:45 UT/GMT on April 19, 2020, and will pass it again at 20:33 UT/GMT on April 19, 2021.</ref><ref name=astrology>{{cite web |title=Astrology Calendar |url=https://www.yourzodiacsign.com/calendar/ |website=yourzodiacsign |access-date=March 29, 2020 |archive-date=March 29, 2020 |archive-url=https://web.archive.org/web/20200329204306/https://www.yourzodiacsign.com/calendar/ |url-status=live }} Signs in UT/GMT for 1950–2030.</ref>

[[File:Daisy ntgr.JPG|alt=Daisy flower|thumb|[[Bellis perennis|Daisy]] flower]] [[File:Sweet Pea (27711557850).jpg|alt=Sweet pea|thumb|[[Sweet pea]]]]

== Observances ==
''This list does not necessarily imply official status or general observance.''

=== Month-long ===
[[File:Kobelwald Kirche Bild Chor.JPG|thumb|A fresco in a Catholic church in Switzerland representing the Resurrection of the Lord]]
* In [[Catholic Church|Catholic]], [[Protestantism|Protestant]] and [[Eastern Orthodox Church|Orthodox]] [[Christian tradition|tradition]], April is the Month of the [[Resurrection of Jesus|Resurrection of the Lord]]. April and March are the months in which the moveable [[Religious festival|Feast]] of [[Easter Sunday]] is celebrated.
* [[National Pet Month]] (UK)

==== United States ====
* [[Arab Americans#Arab American Heritage Month|Arab American Heritage Month]]
* Autism Awareness Month<ref>{{Cite web|url=https://www.governor.virginia.gov/newsroom/proclamations/proclamation/autism-awareness-month-and-world-autism-awareness-day.html|title=Virginia Governor - Ralph Northam - Proclamation|last=|website=www.governor.virginia.gov|language=en-US|access-date=2019-06-09|archive-date=June 9, 2019|archive-url=https://web.archive.org/web/20190609003202/https://www.governor.virginia.gov/newsroom/proclamations/proclamation/autism-awareness-month-and-world-autism-awareness-day.html|url-status=dead}}</ref><ref>{{Cite web|url=https://gov.alaska.gov/newsroom/2019/04/01/autism-awareness-month/|title=Autism Awareness Month – Michael J. Dunleavy|date=April 1, 2019|website=gov.alaska.gov|access-date=2019-06-09|archive-date=June 9, 2019|archive-url=https://web.archive.org/web/20190609003211/https://gov.alaska.gov/newsroom/2019/04/01/autism-awareness-month/|url-status=dead}}</ref><ref>{{Cite web|url=https://www.autismspeaks.org/world-autism-month|title=World Autism Month|website=Autism Speaks|language=en|access-date=2019-06-09|archive-date=June 17, 2019|archive-url=https://web.archive.org/web/20190617195239/https://www.autismspeaks.org/world-autism-month|url-status=live}}</ref>
* [[Cancer Control Month]]
* [[Community colleges in the United States|Community College]] Awareness Month
* [[Confederate History Month]] ([[Alabama]], [[Florida]], [[Georgia (U.S. State)|Georgia]], [[Louisiana]], [[Mississippi]], [[Texas]], [[Virginia]])
* [[Financial Literacy Month]]
* [[Jazz Appreciation Month]]
* [[Joint Policy Board for Mathematics|Mathematics and Statistics Awareness Month]]
* [[Military brat (U.S. subculture)|Month of the Military Child]]<ref>{{cite web|title=The Month of the Military Child |url=https://www.dodea.edu/dodeaCelebrates/Military-Child-Month.cfm |website=Department of Defense Education Activity |publisher=DoDEA |access-date=5 April 2022}}</ref><ref>{{cite web|title=Month of the Military Child |url=https://www.defense.gov/Spotlights/Month-of-the-Military-Child/ |website=Department of Defense |access-date=5 April 2022}}</ref>
* [[National Poetry Month]]
* [[National Poetry Writing Month]]
* [[American Occupational Therapy Association|Occupational Therapy Month]]<ref>{{cite web |title=Occupational Therapy Month |url=https://www.aota.org/Conference-Events/OTMonth.aspx |website=American Occupational Therapy Association |publisher=AOTA |access-date=31 March 2020}}</ref>
* [[List of observances in the United States by presidential proclamation#Annual special months recognized by presidential proclamation|National Prevent Child Abuse Month]]
* [[National Volunteer Month]]
* [[Parkinson's Disease Foundation#Parkinson's Advocates in Research|Parkinson's Disease Awareness Month]]
* Rosacea Awareness Month<ref>{{cite web|title=National Rosacea Society designates April as "Rosacea Awareness Month" |url=https://www.mdedge.com/internalmedicine/article/162349/rosacea/national-rosacea-society-designates-april-rosacea-awareness |date=3 April 2018|publisher=Practical Dermatology|access-date=9 June 2021}}</ref><ref>{{cite web|title=Rosacea Awareness Month Focuses on Management Options |url=https://www.pharmacytimes.com/view/rosacea-awareness-month-focuses-on-management-options |date=1 April 2020|publisher=Pharmacy Times|access-date=9 June 2021}}</ref>
* [[Sexual Assault Awareness Month]]

==== United States food months ====
* Fresh Florida Tomato Month
* National Food Month
* National Grilled Cheese Month
* National Pecan Month
* National Soft Pretzel Month
* National Soyfoods Month

=== Non-Gregorian ===
''(All Baha'i, Islamic, and Jewish observances begin at the sundown prior to the date listed, and end at sundown of the date in question unless otherwise noted.)''
* [[List of observances set by the Bahá'í calendar]]
* [[List of observances set by the Chinese calendar]]
* [[List of observances set by the Hebrew calendar]]
* [[List of observances set by the Islamic calendar]]
* [[List of observances set by the Solar Hijri calendar]]

=== 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]]

=== Fixed ===
[[File:Celebrazione del 2777 Natale di Roma - Pietas Comunità Gentile 2.jpg|thumb|Celebration of the 2777th [[Natale di Roma]] at the [[Circus Maximus]]]]
* [[April 1]]
** [[April Fools' Day]]
** [[Arbor Day#Tanzania|Arbor Day]] ([[Tanzania]])
** [[Civil Service Day]] ([[Thailand]])
** [[Public holidays in Cyprus|Cyprus National Day]] ([[Cyprus]])
** [[Edible Book Day]]
** [[Fossil Fools Day]]
** [[Kha b-Nisan]] ([[Assyrian people]])
** [[National Science Day (Thailand)|National Civil Service Day]] ([[Thailand]])
** [[Odisha Day]] ([[Odisha]], India)
** Start of [[National Prostate Health Month#Related observances|Testicular Cancer Awareness week]] ([[United States]]), April 1–7
** [[Season for Nonviolence]] January 30 – April 4
* [[April 2]]
** [[International Children's Book Day]] ([[International observance]])
** [[Malvinas Day]] ([[Argentina]])
** [[List of food days#April|National Peanut Butter and Jelly Day]] ([[United States]])
** [[Thai Heritage Conservation Day]] ([[Thailand]])
** [[Unity of Peoples of Russia and Belarus Day]] ([[Belarus]])
** [[World Autism Awareness Day]] ([[International observance]])
* [[April 3]]
* [[April 4]]
** [[Children's Day]] ([[Hong Kong]], [[Taiwan]])
** [[Independence Day (Senegal)]]
** [[International observance#April|International Day for Mine Awareness and Assistance in Mine Action]]
** [[Peace Day (Angola)]]
* [[April 5]]
** [[Children's Day]] ([[Palestinian territories]])
** [[List of food days#April|National Caramel Day]] (United States)
** [[Sikmogil]] (South Korea)
* [[April 6]]
** [[Public holidays in Thailand|Chakri Day]] (Thailand)
** [[National Beer Day (United Kingdom)]]
** [[New Beer's Eve]] (United States)
** [[Tartan Day]] (United States & Canada)
* [[April 7]]
** [[Flag Day]] (Slovenia)
** [[Genocide Memorial Day (Rwanda)]], and its related observance:
*** [[International Day of Reflection on the 1994 Rwanda Genocide]] ([[United Nations]])
** [[Motherhood and Beauty Day]] (Armenia)
** [[National Beer Day (United States)]]
** [[Sheikh Abeid Amani Karume Day]] (Tanzania)
** [[Public holidays in Mozambique|Women's Day]] (Mozambique)
** [[World Health Day]] ([[International observance]])
* [[April 8]]
** [[Buddha's Birthday]] (Japan only, other countries follow different calendars)
** [[Feast of the Third Day of the Writing of the Book of the Law|Feast of the First Day of the Writing of the Book of the Law]] ([[Thelema]])
** [[International Romani Day]] ([[International observance]])
* [[April 9]]
** [[Anniversary of the German Invasion of Denmark]] (Denmark)
** [[Baghdad Liberation Day]] ([[Iraqi Kurdistan]])
** [[Constitution Day (Kosovo)]]
** [[Day of National Unity (Georgia)]]
** [[Day of the Finnish Language]] (Finland)
** [[Day of Valor]] or ''Araw ng Kagitingan'' (Philippines)
** [[Feast of the Second Day of the Writing of the Book of the Law]] ([[Thelema]])
** [[List of food days#Global or international|International Banshtai Tsai Day]]
** [[Martyr's Day (Tunisia)]]
** [[National Former Prisoner of War Recognition Day]] (United States)
** [[Ásatrú holidays#The Troth|Remembrance for Haakon Sigurdsson]] ([[The Troth]])
** [[Vimy Ridge Day]] (Canada)
* [[April 10]]
** [[Day of the Builder]] (Azerbaijan)
** [[Feast of the Third Day of the Writing of the Book of the Law]] ([[Thelema]])
** [[Siblings Day]] ([[International observance]])
* [[April 11]]
** [[Juan Santamaría Day]], anniversary of his death in the [[Second Battle of Rivas]]. (Costa Rica)
** [[International Louie Louie Day]]
** [[List of food days#April|National Cheese Fondue Day]] (United States)
** [[World Parkinson's Day]]
* [[April 12]]
** [[Children's Day]] (Bolivia and Haiti)
** Commemoration of first human in space by [[Yuri Gagarin]]:
*** [[Cosmonautics Day]] (Russia)
*** [[International Day of Human Space Flight]]
*** [[Yuri's Night]] ([[International observance]])
** [[Halifax Day]] ([[North Carolina]])
** [[List of food days#April|National Grilled Cheese Sandwich Day]] (United States)
** [[National Redemption Day]] (Liberia)
* [[April 13]]
** [[Jefferson's Birthday]] (United States)
** [[Coma Patients' Day|Katyn Memorial Day]] ([[Poland]])
** [[Teachers' Day#Dates by country/region|Teachers' Day]] ([[Ecuador]])
** First day of [[Thingyan]] ([[Myanmar]]) (April 13–16)
** [[Remembrance days in Slovakia|Unfairly Prosecuted Persons Day]] ([[Slovakia]])
* [[April 14]]
** [[Okinawan festivals and observances|ʔabusibaree]] ([[Okinawa Islands]], Japan)
** [[B. R. Ambedkar|Ambedkar Jayanti]] (India)
** [[Black Day (South Korea)]]
** [[Commemoration of Anfal Genocide Against the Kurds]] ([[Iraqi Kurdistan]])
** [[Dhivehi Language Day]] (Maldives)
** [[Day of Mologa]] ([[Yaroslavl Oblast]], Russia)
** [[Day of the Georgian language]] ([[Georgia (country)]])
** [[Emancipation Day|Season of Emancipation]] (April 14 to August 23) (Barbados)
** [[N'Ko Alphabet Day]] ([[Mande languages|Mande speakers]])
** [[Pohela Boishakh]] (Bangladesh)
** [[Pana Sankranti]] ([[Odisha]], India)
** [[Puthandu]] ([[Tamils]]) (India, Malaysia, Singapore, Sri Lanka)
** Second day of [[Songkran (Thailand)|Songkran]] (Thailand)
** [[Pan American Day]] (several countries in the Americas)
** The first day of [[Takayama Festival|Takayama Spring Festival]] ([[Takayama, Gifu]], Japan)
** [[Vaisakh]] ([[Punjab (region)|Punjab]]), (India and Pakistan)
** [[Youth Day (Angola)]]
* [[April 15]]
** [[Day of the Sun]] (North Korea).<ref name="SeolSongAh2015">{{Cite web|url=http://www.dailynk.com/english/read.php?cataId=nk01500&num=13620|title=Kim Jong Un's birthday still not a holiday|author=Seol Song Ah|date=7 December 2015|access-date=13 January 2017|work=Daily NK|archive-date=January 7, 2018|archive-url=https://web.archive.org/web/20180107010642/http://www.dailynk.com/english/read.php?cataId=nk01500&num=13620|url-status=live}}</ref>
** [[Hillsborough disaster#Memorials|Hillsborough Disaster Memorial]] ([[Liverpool]], England)
** [[Jackie Robinson Day]] (United States)
** [[Pohela Boishakh]] ([[West Bengal]], India) (Note: celebrated on [[April 14]] in Bangladesh)
** Last day of [[Songkran (Thailand)|Songkran]] (Thailand)
** [[Tax Day]], the official deadline for filing an individual [[Tax return (United States)|tax return]] (or requesting an extension). (United States, Philippines)
** [[Universal Day of Culture]]
** [[World Art Day]]
* [[April 16]]
** [[Birthday of José de Diego]] (Puerto Rico, United States)
** [[Birthday of Queen Margrethe II]] (Denmark)
** [[Emancipation Day]] ([[Washington, D.C.]], United States)
** [[Foursquare Day]] ([[International observance]])
** [[Memorial Day for the Victims of the Holocaust]] (Hungary)
** [[List of awareness days#April|National Healthcare Decisions Day]] (United States)
** [[Remembrance of Chemical Attack on Balisan and Sheikh Wasan]] ([[Iraqi Kurdistan]])
** [[World Voice Day]]
* [[April 17]]
** [[Evacuation Day (Syria)]]
** [[FAO Day]] (Iraq)
** [[Flag Day (American Samoa)]]
** [[Malbec World Day]]
** [[List of food days#April|National Cheeseball Day]] (United States)
** [[List of food days#Italy|National Espresso Day]] (Italy)
** [[Public holidays in Gabon|Women's Day]] (Gabon)
** [[World Hemophilia Day]]
* [[April 18]]
** [[Anniversary of the Victory over the Teutonic Knights in the Battle of the Ice, 1242]] (Russia)
** [[Army Day (Iran)]]
** [[Coma Patients' Day]] (Poland)
** [[Día del Amigo|Friend's Day]] (Brazil)
** [[Independence Day (Zimbabwe)]]
** [[International Day For Monuments and Sites]]
** [[Invention Day]] (Japan)
* [[April 19]]
** [[Army Day (Brazil)]]
** [[Beginning of the Independence Movement]] (Venezuela)
** [[History of lysergic acid diethylamide#"Bicycle Day"|Bicycle Day]]
** [[Dutch-American Friendship Day]] (United States)
** [[Holocaust Remembrance Day]] (Poland)
** [[Indigenous Peoples Day (Brazil)|Indigenous Peoples Day]] (Brazil)
** [[King Mswati III's birthday]] (Eswatini)
** [[Landing of the 33 Patriots Day]] (Uruguay)
** [[List of food days#April|National Garlic Day]] (United States)
** [[List of food days#April|National Rice Ball Day]] (United States)
** [[Primrose Day]] (United Kingdom)
* [[April 20]]
** [[420 (cannabis culture)]] (International)
** [[UN Chinese Language Day]] ([[United Nations]])
* [[April 21]]
** [[Natale di Roma]](Italy)
** [[Muster (Texas A&M University)#A. and M. Day|A&M Day]] ([[Texas A&M University]])
** [[Civil Services of India#Civil Services Day|Civil Service Day]] (India)
** [[Public holidays in Russia#Regional public holidays|Day of Local Self-Government]] (Russia)
** [[Grounation Day]] ([[Rastafari movement]])
** [[Public holidays in Mexico#Civic holidays|Heroic Defense of Veracruz]] (Mexico)
** [[Public holidays in North Korea|Kang Pan-sok's Birthday]] (North Korea)
** [[Kartini Day]] (Indonesia)
** [[Public holidays in Russia|Local Self Government Day]] (Russia)
** [[Arbor Day#Kenya|National Tree Planting Day]] (Kenya)
** [[San Jacinto Day]] ([[Texas]])
** [[Queen's Official Birthday#Other countries and territories|Queen's Official Birthday]] ([[Falkland Islands]])
** [[Public holidays in Brazil|Tiradentes' Day]] (Brazil)
** [[Vietnam Book Day]] (Vietnam)
* [[April 22]]
** [[Discovery Day]] (Brazil)
** [[Earth Day]] ([[International observance]]) and its related observance:
*** [[International Mother Earth Day]]
** [[Holocaust Memorial Days|Holocaust Remembrance Day]] (Serbia)
** [[List of food days#April|National Jelly Bean Day]] (United States)
* [[April 23]]
** [[Castile and León Day]] ([[Castile and León]], Spain)
** [[German Apples Day|German Beer Day]] (Germany)
** [[Conch Republic|Independence Day]] ([[Conch Republic]], [[Key West, Florida]])
** [[International Pixel-Stained Technopeasant Day]]
** [[Khongjom Day]] ([[Manipur]], India)
** [[National Sovereignty and Children's Day]] (Turkey and Northern Cyprus)
** [[Navy Day (China)]]
** [[St George's Day]] (England) and its related observances:
*** [[Canada Book Day]] (Canada)
*** [[St George's Day#Catalonia|La Diada de Sant Jordi]] ([[Catalonia]], Spain)
*** [[World Book Day]]
** [[UN English Language Day]] ([[United Nations]])
* [[April 24]]
** [[Armenian Genocide Remembrance Day]] (Armenia)
** [[Concord Day]] (Niger)
** [[Children's Day (Zambia)]]
** [[Democracy Day (Nepal)]]
** [[Fashion Revolution Day]]
** [[Flag Day (Ireland)]]
** [[International Sculpture Day]]
** [[Kapyong Day]] (Australia)
** [[Labour Day#Bangladesh|Labour Safety Day]] (Bangladesh)
** [[National Panchayati Raj Day]] (India)
** [[List of food days#April|National Pigs in a Blanket Day]] (United States)
** [[Republic Day (The Gambia)]]
** [[St Mark's Eve]] ([[Western Christianity]])
** [[World Day for Laboratory Animals]]
* [[April 25]]
** [[Anniversary of the First Cabinet of Kurdish Government]] ([[Iraqi Kurdistan]])
** [[Anzac Day]] (Australia, New Zealand)
** [[Arbor Day (Germany)]]
** [[DNA Day]]
** [[Feast of Saint Mark]] ([[Western Christianity]])
** [[Flag Day (Faroe Islands)]]
** [[Public holidays in Eswatini|Flag Day (Eswatini)]]
** [[Freedom Day (Portugal)]]
** [[Liberation Day (Italy)]]
** [[Rogation Day|Major Rogation]] ([[Western Christianity]])
** [[Military Foundation Day]] (North Korea)<ref name="SeolSongAh2015"/>
** [[List of food days#April|National Zucchini Bread Day]] (United States)
** [[Parental Alienation Awareness Day]]
** [[Red Hat Society Day]]
** [[Sinai Liberation Day]] (Egypt)
** [[World Malaria Day]]
* [[April 26]]
** [[Chernobyl disaster]] related observances:
*** [[International Duties Memorial Day|Memorial Day of Radiation Accidents and Catastrophes]] (Russia)
*** [[Day of Remembrance of the Chernobyl tragedy]] (Belarus)
** [[Confederate Memorial Day]] ([[Florida]], United States)
** [[Hug A Friend Day]]
** [[Lesbian Visibility Day]]
** [[List of food days#April|National Pretzel Day]] (United States)
** [[Old Permic alphabet|Old Permic Alphabet Day]]
** [[Union Day (Tanzania)]]
** [[World Intellectual Property Day]]
* [[April 27]]
** [[Public holidays in Russia|Day of Russian Parliamentarism]] (Russia)
** [[Day of the Uprising Against the Occupying Forces]] (Slovenia)
** [[Flag Day]] (Moldova)
** [[Freedom Day (South Africa)]]
*** [[UnFreedom Day]]
** [[Independence Day (Sierra Leone)]]
** [[Public holidays in Togo|Independence Day (Togo)]]
** [[National Day]] ([[Mayotte]])
** [[National Day]] (Sierra Leone)
** [[List of food days#April|National Prime Rib Day]] (United States)
** [[Flag flying days in Finland|National Veterans' Day]] (Finland)
* [[April 28]]
** [[Lawyers' Day]] ([[Orissa, India]])
** [[Mujahideen Victory Day]] (Afghanistan)
** [[National Day]] ([[Sardinia]], Italy)
** [[National Heroes Day (Barbados)|National Heroes Day]] (Barbados)
** [[Restoration of Sovereignty Day]] (Japan)
** [[Workers' Memorial Day|Workers' Memorial Day and World Day for Safety and Health at Work]] ([[International observances|international]])
*** [[National Day of Mourning (Canada)|National Day of Mourning]] (Canada)
* [[April 29]]
** [[Day of Remembrance for all Victims of Chemical Warfare]] ([[United Nations]])
** [[International Dance Day]] ([[UNESCO]])
** [[Public holidays in Denmark#Other special days|Princess Bedike's Birthday]] (Denmark)
** [[List of food days#April|National Shrimp Scampi Day]] (United States)
** [[Shōwa Day]], traditionally the start of the [[Golden Week (Japan)|Golden Week]] holiday period, which is April 29 and May 3–5. (Japan)
* [[April 30]]
** [[Armed Forces Day]] ([[Georgia (country)]])
** [[Flag flying days in Sweden|Birthday of the King]] (Sweden)
** [[Battle of Camarón|Camarón Day]] ([[French Foreign Legion]])
** [[Children's Day]] (Mexico)
** [[Public holidays in Thailand|Consumer Protection Day]] (Thailand)
** [[Honesty Day]] (United States)
** [[International Jazz Day]] ([[UNESCO]])
** [[Martyrs' Day (Pakistan)|Martyrs' Day]] (Pakistan)
** [[May Eve]], the eve of the first day of summer in the Northern hemisphere ''(see [[May 1]])'':
*** [[Beltane]] begins at sunset in the Northern hemisphere, [[Samhain]] begins at sunset in the Southern hemisphere. ([[Neo-Druidism|Neo-Druidic]] [[Wheel of the Year]])
*** [[Carodejnice]] (Czech Republic and Slovakia)
*** [[Walpurgis Night]] (Central and Northern Europe)
** [[Persian Gulf naming dispute#National Persian Gulf Day|National Persian Gulf Day]] (Iran)
** [[Reunification Day]] (Vietnam)
** [[Public holidays in Russia#Popular holidays which are not public holidays|Russian State Fire Service Day]] (Russia)
** [[Tax return (Canada)|Tax Day (Canada)]]
** [[Teachers' Day]] (Paraguay)

== See also ==
* [[Germanic calendar]]
* [[List of historical anniversaries]]
* [[Sinking of the RMS Titanic|Sinking of the RMS ''Titanic'']]

== References ==
 {{Reflist}}

== External links ==
{{sisterlinks|d=Q118|c=Category:April|n=no|b=no|v=no|voy=April|m=no|mw=no|s=no|wikt=April|species=no}}
* [http://www.arborday.org/ National Arbor Day Foundation]

{{months}}

{{Authority control}}

[[Category:April| ]]
[[Category:Months|*04]]