Önwa ànó
Na Gregorian calender na Julian, Eprel bu onwa nke anọ na afo.  Ọ bụ nke mbụ n'ime ọnwa anọ iji nwee ogologo ụbọchị iri atọ, na nke abụọ n'ime ọnwa ise ka ogologo ya na-erughị ụbọchị 31.

A na-ejikọta Eprel na oge opupu ihe ubi na Northern Hemisphere, yana mgbụsị akwụkwọ na Southern Hemisphere, ebe ọ bụ oge oge ya na October na Northern Hemisphere na ntụgharị ihu.

.Ndị Rom nyere ọnwa a aha Latin Aprilis[1] mana ewepụtara aha a ejighị n'aka.  Usoro ọdịnala sitere na ngwaa aperire, "imeghe", na-egosi na ọ bụ oge mgbe osisi na okooko osisi na-amalite "imeghe", nke a na-akwado site na iji Grik ọgbara ọhụrụ nke άνοιξη (ánixi) (emeghe) maka.  mmiri.  Ebe ọ bụ na e kpọrọ ụfọdụ ọnwa ndị Rom aha maka nsọpụrụ chi, nakwa dị ka April dị nsọ nye chi nwanyị Venus, a na-eme Veneralia ya n’ụbọchị mbụ, a na-atụ aro na Aprilis bụ ọnwa mbụ ya bụ Aphrilis, nke sitere na aha chi nwanyị Gris ya na ya bụ.  Aphrodite (Aphros), ma ọ bụ site na Etruscan aha Apru.  Jacob Grimm na-atụ aro aha chi ma ọ bụ dike, Aper ma ọ bụ Aprus.[2]

Na China, ala ala na-akọ ugbo n'ụzọ ihe atụ site n'aka eze ukwu na ndị isi ọbara mere n'ọnwa nke atọ ha, nke na-adaba na Eprel. N'asụsụ Finnish, Eprel bụ huhtikuu, nke pụtara ọnwa na-ere ọkụ, mgbe a na-egbute gymnosperms maka ịpịa na ịgba ala ugbo ọkụ.

N'asụsụ Slovene, aha ọdịnala a ma ama bụ mali traven, nke pụtara ọnwa mgbe osisi malitere itolite. E dere ya na 1466 na ihe odide Škofja Loka.

United States Afọ nri 

 Ọnwa Tomato Ọhụrụ nke Florida
 Ọnwa Nri Mba
 Ọnwa Cheese e siri esi nke Mba
 Ọnwa Pecan nke Mba
 Ọnwa Pretzel Dị Nro nke Mba
 Ọnwa Soya nke Mba

 Oge nchekwa nke ìhè ehihie agwụla (Australia na New Zealand)
 Ụbọchị Ndị Ọkà Mmiri (nke bụbu mba Soviet Union)
 Kanamara Matsuri (Kawasaki, Japan)
 Ụbọchị mmeghe (United States)

 April 1
 April Fools' Day
 Arbor Day (Tanzania)
 Civil Service Day (Thailand)
 Cyprus National Day (Cyprus)
 Edible Book Day
 Fossil Fools Day
 Kha b-Nisan (Assyrian people)
 National Civil Service Day (Thailand)
 Odisha Day (Odisha, India)
 Start of 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)
 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 Day for Mine Awareness and Assistance in Mine Action
 Peace Day (Angola)
 April 5
 Children's Day (Palestinian territories)
 National Caramel Day (United States)
 Sikmogil (South Korea)
 April 6
 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)
 No Housework Day
 Sheikh Abeid Amani Karume Day (Tanzania)
 Women's Day (Mozambique)
 World Health Day (International observance)
 April 8
 Buddha's Birthday (Japan only, other countries follow different calendars)
 Feast of the First Day of the Writing of the Book of the Law (Thelema)
 International Romani Day (International observance)
 Trading Cards for Grown-ups Day
 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)
 International Banshtai Tsai Day
 Martyr's Day (Tunisia)
 National Former Prisoner of War Recognition Day (United States)
 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
 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)
 National Grilled Cheese Sandwich Day (United States)
 National Redemption Day (Liberia)
 Walk on Your Wild Side Day
 April 13
 Jefferson's Birthday (United States)
 Katyn Memorial Day (Poland)
 Teacher's Day (Ecuador)
 First day of Thingyan (Myanmar) (April 13–16)
 Unfairly Prosecuted Persons Day (Slovakia)
 April 14
 ʔabusibaree (Okinawa Islands, Japan)
 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))
 Season of Emancipation (April 14 to August 23) (Barbados)
 N'Ko Alphabet Day (Mande speakers)
 Pohela Boishakh (Bangladesh)
 Pana Sankranti (Odisha, India)
 Puthandu (Tamils) (India, Malaysia, Singapore, Sri Lanka)
 Second day of Songkran (Thailand) (Thailand)
 Pan American Day (several countries in the Americas)
 The first day of Takayama Spring Festival (Takayama, Gifu, Japan)
 Vaisakh (Punjab (region)), (India and Pakistan)
 Youth Day (Angola)
 April 15
 Day of the Sun (North Korea).
 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) (Thailand)
 Tax Day, the official deadline for filing an individual 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)
 National Healthcare Decisions Day (United States)
 Remembrance of Chemical Attack on Balisan and Sheikh Wasan (Iraqi Kurdistan)
 World Voice Day
 April 17
 Blah Blah Blah Day
 Evacuation Day (Syria)
 FAO Day (Iraq)
 Flag Day (American Samoa)
 Malbec World Day
 National Cheeseball Day (United States)
 National Espresso Day (Italy)
 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)
 Friend's Day (Brazil)
 Independence Day (Zimbabwe)
 International Day For Monuments and Sites
 Invention Day (Japan)
 Pet Owner's Independence Day
 April 19
 Army Day (Brazil)
 Beginning of the Independence Movement (Venezuela)
 Bicycle Day
 Dutch-American Friendship Day (United States)
 Holocaust Remembrance Day (Poland)
 Indian Day (Brazil)
 King Mswati III's birthday (Eswatini)
 Landing of the 33 Patriots Day (Uruguay)
 National Garlic Day (United States)
 National Rice Ball Day (United States)
 Primrose Day (United Kingdom)
 April 20
 420 (cannabis culture) (International)
 UN Chinese Language Day (United Nations)
 April 21
 A&amp;M Day (Texas A&amp;M University)
 Civil Service Day (India)
 Day of Local Self-Government (Russia)
 Grounation Day (Rastafari movement)
 Heroic Defense of Veracruz (Mexico)
 Kang Pan-sok's Birthday (North Korea)
 Kartini Day (Indonesia)
 Local Self Government Day (Russia)
 National Tree Planting Day (Kenya)
 San Jacinto Day (Texas)
 Queen's Official Birthday (Falkland Islands)
 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 Remembrance Day (Serbia)
 National Jelly Bean Day (United States)
 April 23
 Castile and León Day (Castile and León, Spain)
 German Beer Day (Germany)
 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)
 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 Safety Day (Bangladesh)
 National Panchayati Raj Day (India)
 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)
 Flag Day (Eswatini)
 Freedom Day (Portugal)
 Liberation Day (Italy)
 Major Rogation (Western Christianity)
 Military Foundation Day (North Korea)
 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:
 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
 Hug an Australian Day
 Lesbian Visibility Day
 National Pretzel Day (United States)
 Old Permic Alphabet Day
 Union Day (Tanzania)
 World Intellectual Property Day
 April 27
 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)
 Independence Day (Togo)
 National Day (Mayotte)
 National Day (Sierra Leone)
 National Prime Rib Day (United States)
 National Veterans' Day (Finland)
 April 28
 Lawyers' Day (Orissa, India)
 Mujahideen Victory Day (Afghanistan)
 National Day (Sardinia, Italy)
 National Heroes Day (Barbados)
 Restoration of Sovereignty Day (Japan)
 Workers' Memorial Day and World Day for Safety and Health at Work (international)
 National Day of Mourning (Canada)
 April 29
 Day of Remembrance for all Victims of Chemical Warfare (United Nations)
 International Dance Day (UNESCO)
 Princess Bedike's Birthday (Denmark)
 National Shrimp Scampi Day (United States)
 Shōwa Day, traditionally the start of the Golden Week holiday period, which is April 29 and May 3–5. (Japan)
 April 30
 Armed Forces Day (Georgia (country))
 Birthday of the King (Sweden)
 Camarón Day (French Foreign Legion)
 Children's Day (Mexico)
 Consumer Protection Day (Thailand)
 Honesty Day (United States)
 International Jazz Day (UNESCO)
 Martyr's 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-Druidic Wheel of the Year)
 Carodejnice (Czech Republic and Slovakia)
 Walpurgis Night (Central and Northern Europe)
 National Persian Gulf Day (Iran)
 Reunification Day (Vietnam)
 Russian State Fire Service Day (Russia)
 Tax Day (Canada)
 Teachers' Day (Paraguay)

Hụkwa 

 Kalenda ndị Germany
 Ndepụta ncheta akụkọ ihe mere eme
 Mmiri nke RMS <i id="mwBKg">Titanic</i>

Ihe odide

Njikọ mpụga 
 

 
 

 National Arbor Day Foundation