Calendarby GlyphApril 2023 calendar
April 2023
PastMay 2023
Easter seasonThe fifty days from Easter Sunday to Pentecost (Eastertide).USCCB liturgical year, computedDetails →Counting of the OmerThe 49 days counted from the second night of Passover to Shavuot. Begins at sundown on Thu, April 6, 2023.Hebcal, computedDetails →Gahambar Maidyozarem (mid-spring)The first of the six five-day seasonal feasts (Gahambars), in the Fasli calendar.avesta.org Zoroastrian calendars, computedDetails →Festival of RidvanThe twelve days of Baha’u’llah’s stay in the Garden of Ridvan in 1863, the King of Festivals; Baha’i institutions are elected during it.Baha’i World Centre, computedDetails →
PastApril 2023
Reunification Day (Vietnam)VietnamA public holiday in Vietnam, known locally as Ngày Giải phóng miền Nam, thống nhất đất nước.Nager.DateDetails →International Jazz DayA United Nations international day.United NationsDetails →Shōwa Day (Japan)JapanA public holiday in Japan.Nager.DateDetails →Ninth Day of RidvanHoly day during the Festival of Ridvan. Begins at sunset the evening before.Baha’i World Centre, computedDetails →International Day in Memory of the Victims of EarthquakesA United Nations international day.United NationsDetails →Devopsdays Cáceres 2023Cáceres, Spain · IndependentA two-day tech conference in Cáceres, Spain.IndependentDetails →2023 NFL DraftKansas City, MissouriThe NFL's annual draft of college players.WikipediaDetails →NDC Porto 2023Porto, Portugal · IndependentA five-day tech conference in Porto, Portugal.IndependentDetails →100th anniversary: The FA Cup final (crowd and police pictured) between Bolton Wanderers and West...In 1923, The FA Cup final (crowd and police pictured) between Bolton Wanderers and West Ham United was held on the opening day of the Empire Stadium in London.WikipediaDetails →50th anniversary: The album The Dark Side of the Moon by the British progressive rock band Pink...In 1973, The album The Dark Side of the Moon by the British progressive rock band Pink Floyd entered the Billboard Top LPs & Tape chart, on which it spent a...WikipediaDetails →Terry Pratchett, born 1948 (75 years)English journalist, author, and screenwriter (died 2015).WikipediaDetails →World Day for Safety and Health at WorkA United Nations international day.United NationsDetails →PyData 2023Seattle, WA · IndependentA three-day tech conference in Seattle, WA.IndependentDetails →Great International Developer Summit 2023Bengaluru, India · IndependentA four-day tech conference in Bengaluru, India.IndependentDetails →
Amazon earnings (Q1 FY2023)Amazon (AMZN)Amazon reported Q1 FY2023 results after the market closed.EarningsDetails →Freedom Day (South Africa)South AfricaA public holiday in South Africa.Nager.DateDetails →King's Day (Netherlands)NetherlandsA public holiday in the Netherlands, known locally as Koningsdag.Nager.DateDetails →First quarter moonThe Moon is half lit (waxing).NASA, computedDetails →175th anniversary: The French National Assembly under Victor Schœlcher proclaims the abolition of...In 1848, The French National Assembly under Victor Schœlcher proclaims the abolition of slavery within France and it's colonies following the February Revolution.WikipediaDetails →
AppFolio earnings (Q1 FY2023)AppFolio (APPF)AppFolio reported Q1 FY2023 results after the market closed.EarningsDetails →
Cloudflare earnings (Q1 FY2023)Cloudflare (NET)Cloudflare reported Q1 FY2023 results after the market closed.EarningsDetails →
Intel earnings (Q1 FY2023)Intel (INTC)Intel reported Q1 FY2023 results after the market closed.EarningsDetails →
Pinterest earnings (Q1 FY2023)Pinterest (PINS)Pinterest reported Q1 FY2023 results after the market closed.EarningsDetails →
Snap earnings (Q1 FY2023)Snap (SNAP)Snap reported Q1 FY2023 results after the market closed.EarningsDetails →
Teradyne earnings (Q1 FY2023)Teradyne (TER)Teradyne reported Q1 FY2023 results before the market opened.EarningsDetails →Devops Days Phoenix 2023Phoenix, AZ · IndependentA tech conference in Phoenix, AZ.IndependentDetails →Washington My Health My Data Act: HB 1155 signedWashingtonGovernor signs My Health My Data Act.RegulationsDetails →building IoT 2023Munich, Germany · IndependentA two-day tech conference in Munich, Germany.IndependentDetails →API Conference London 2023London, United Kingdom · IndependentA four-day tech conference in London, United Kingdom.IndependentDetails →DevOps Conference London 2023London, United Kingdom · IndependentA four-day tech conference in London, United Kingdom.IndependentDetails →Serverless Architecture Conference London 2023London, United Kingdom · IndependentA four-day tech conference in London, United Kingdom.IndependentDetails →PyCon (US) 2023Salt Lake City, UT · IndependentA tech conference in Salt Lake City, UT.IndependentDetails →Union Day (Tanzania)TanzaniaA public holiday in Tanzania, known locally as Sikukuu ya Muungano.Nager.DateDetails →Yom HaAtzma’ut (Israel Independence Day)Israel’s Independence Day. Begins at sundown on Tue, April 25, 2023.Hebcal, computedDetails →Arno Allan Penzias, born 1933 (90 years)German-American physicist and academic, Nobel Prize laureate (died 2024).WikipediaDetails →Eugène Delacroix, born 1798 (225 years)French painter and lithographer (died 1863).WikipediaDetails →Jet Li, born 1963 (60 years)Chinese-Singaporean martial artist, actor, and producer.WikipediaDetails →Vicente Aleixandre, born 1898 (125 years)Spanish poet and author, Nobel Prize laureate (died 1984).WikipediaDetails →International Chernobyl Disaster Remembrance DayA United Nations international day.United NationsDetails →World Intellectual Property DayA United Nations international day.United NationsDetails →
eBay earnings (Q1 FY2023)eBay (EBAY)EBay reported Q1 FY2023 results after the market closed.EarningsDetails →
KLA earnings (Q3 FY2023)KLA (KLAC)KLA reported Q3 FY2023 results after the market closed.EarningsDetails →
PTC earnings (Q2 FY2023)PTC (PTC)PTC reported Q2 FY2023 results after the market closed.EarningsDetails →
ServiceNow earnings (Q1 FY2023)ServiceNow (NOW)ServiceNow reported Q1 FY2023 results after the market closed.EarningsDetails →
Tyler Technologies earnings (Q1 FY2023)Tyler Technologies (TYL)Tyler Technologies reported Q1 FY2023 results after the market closed.EarningsDetails →
Vertiv earnings (Q1 FY2023)Vertiv (VRT)Vertiv reported Q1 FY2023 results before the market opened.EarningsDetails →
Microsoft earnings (Q3 FY2023)Microsoft (MSFT)Microsoft reported Q3 FY2023 results after the market closed.EarningsDetails →Digital Services Act: First VLOP/VLOSE designationsEuropean UnionCommission designated the first 19 very large online platforms and search engines (e.g. Amazon Store, Facebook, Google Search, TikTok, X). Obligations apply...RegulationsDetails →Anzac Day (New Zealand)New ZealandA public holiday in New Zealand.Nager.DateDetails →Freedom Day (Portugal)PortugalA public holiday in Portugal, known locally as Dia da Liberdade.Nager.DateDetails →Liberation Day (Italy)ItalyA public holiday in Italy, known locally as Festa della Liberazione.Nager.DateDetails →Sinai Liberation Day (Egypt)EgyptA public holiday in Egypt.Nager.DateDetails →RadonitsaThe Tuesday after Thomas Sunday, when Russian and Ukrainian Orthodox visit family graves.Orthodox Church in America, computedDetails →Yom HaZikaron (Israel’s Memorial Day)Israel’s day of remembrance for fallen soldiers and victims of terror, the day before Independence Day. Begins at sundown on Mon, April 24, 2023.Hebcal, computedDetails →International Delegate’s DayA United Nations international day.United NationsDetails →World Malaria DayA United Nations international day.United NationsDetails →
Fiserv earnings (Q1 FY2023)Fiserv (FISV)Fiserv reported Q1 FY2023 results before the market opened.EarningsDetails →
Manhattan Associates earnings (Q1 FY2023)Manhattan Associates (MANH)Manhattan Associates reported Q1 FY2023 results after the market closed.EarningsDetails →
Texas Instruments earnings (Q1 FY2023)Texas Instruments (TXN)Texas Instruments reported Q1 FY2023 results after the market closed.EarningsDetails →Devopsdays Geneva 2023Geneva, Switzerland · IndependentA two-day tech conference in Geneva, Switzerland.IndependentDetails →european lisp symposium 2023Online · IndependentA two-day tech conference, held online.IndependentDetails →International Day of Multilateralism and Diplomacy for PeaceA United Nations international day.United NationsDetails →
Cadence earnings (Q1 FY2023)Cadence (CDNS)Cadence reported Q1 FY2023 results after the market closed.EarningsDetails →
Tenable earnings (Q1 FY2023)Tenable (TENB)Tenable reported Q1 FY2023 results after the market closed.EarningsDetails →Devopsdays Denver 2023Denver, CO · IndependentA two-day tech conference in Denver, CO.IndependentDetails →2023 London MarathonLondonOne of the six World Marathon Majors.WikipediaDetails →675th anniversary: The first knights of the Order of the Garter, an order of chivalry founded by...In 1348, The first knights of the Order of the Garter, an order of chivalry founded by King Edward III of England, were appointed.WikipediaDetails →Eid al-Fitr Third Day (Turkey)TurkeyA public holiday in Turkey, known locally as Ramazan Bayramı 3. Gün.Nager.DateDetails →National Independence & Children's Day (Turkey)TurkeyA public holiday in Turkey, known locally as Ulusal Egemenlik ve Çocuk Bayramı.Nager.DateDetails →English Language DayA United Nations international day.United NationsDetails →International Girls in ICT DayA United Nations international day.United NationsDetails →Spanish Language DayA United Nations international day.United NationsDetails →World Book and Copyright DayA United Nations international day.United NationsDetails →Coachella 2023Indio, CaliforniaTwo weekends of the Coachella Valley Music and Arts Festival.WikipediaDetails →Lyrids meteor shower peakUp to about 18 meteors an hour under a dark sky at the peak (IMO zenithal hourly rate); best after midnight.International Meteor Organization, computedDetails →950th anniversary: Gregory VII was elected pope following the death of Alexander IIIn 1073, Gregory VII was elected pope following the death of Alexander II.WikipediaDetails →International Mother Earth DayA United Nations international day.United NationsDetails →Eid al-Fitr Second Day (Turkey)TurkeyA public holiday in Turkey, known locally as Ramazan Bayramı 2. Gün.Nager.DateDetails →Hari Raya Puasa (Singapore)SingaporeA public holiday in Singapore.Nager.DateDetails →Akshaya TritiyaAn auspicious day for new beginnings and buying gold; for Jains, the end of Rishabhanatha’s year-long fast. Vaishakha, Shukla 3. Regional dates can differ...Wikipedia, computedDetails →75th anniversary: Civil War in Mandatory Palestine: The Jewish paramilitary group Haganah...In 1948, Civil War in Mandatory Palestine: The Jewish paramilitary group Haganah captured Haifa from the Arab Liberation Army.WikipediaDetails →Louise Glück, born 1943 (80 years)American poet (died 2023).WikipediaDetails →International Day of Greening the PlanetA United Nations international day.United NationsDetails →Eid al-FitrThe festival that ends Ramadan. 10/1/1444 AH in the Umm al-Qura calendar. Begins the evening before; the actual date depends on local moon sighting and can...Umm al-Qura calendar, computedDetails →First Day of RidvanBaha’u’llah’s declaration in the Garden of Ridvan, 1863: the start of the twelve-day Festival of Ridvan. Begins at sunset the evening before.Baha’i World Centre, computedDetails →Groundation DayHaile Selassie’s visit to Jamaica on April 21, 1966.BBC Religions: Rastafari holy days, computedDetails →Eid al-Fitr First Day (Turkey)TurkeyA public holiday in Turkey, known locally as Ramazan Bayramı 1. Gün.Nager.DateDetails →Tiradentes (Brazil)BrazilA public holiday in Brazil, known locally as Dia de Tiradentes.Nager.DateDetails →World Creativity and Innovation DayA United Nations international day.United NationsDetails →Devopsdays Birmingham, AL 2023Birmingham, AL · IndependentA two-day tech conference in Birmingham, AL.IndependentDetails →Laserfiche Empower 2023Dallas, Dallas-Fort Worth, TX · IndependentA two-day tech conference in Dallas, Dallas-Fort Worth, TX.IndependentDetails →InflectraCon 2023Washington, Washington DC, DC · IndependentA three-day tech conference in Washington, Washington DC, DC.IndependentDetails →KubeCon + CloudNativeCon Europe 2023Amsterdam, Netherlands · Linux FoundationA five-day tech conference in Amsterdam, Netherlands.Linux FoundationDetails →First Day of Summer (Iceland)IcelandA public holiday in Iceland, known locally as Sumardagurinn fyrsti.Nager.DateDetails →Chinese Language DayA United Nations international day.United NationsDetails →
Amazon earnings (Q1 FY2023)Amazon (AMZN)Amazon reported Q1 FY2023 results after the market closed.EarningsDetails →Freedom Day (South Africa)South AfricaA public holiday in South Africa.Nager.DateDetails →King's Day (Netherlands)NetherlandsA public holiday in the Netherlands, known locally as Koningsdag.Nager.DateDetails →First quarter moonThe Moon is half lit (waxing).NASA, computedDetails →175th anniversary: The French National Assembly under Victor Schœlcher proclaims the abolition of...In 1848, The French National Assembly under Victor Schœlcher proclaims the abolition of slavery within France and it's colonies following the February Revolution.WikipediaDetails →| Date | Event | |||
|---|---|---|---|---|
| PastMay 2023 | ||||
| Apr 9Sun3 years ago | Easter seasonThe fifty days from Easter Sunday to Pentecost (Eastertide).Religion · Catholic · to May 28 · USCCB liturgical year | – | annual | USCCB liturgical yearComputed (rule) |
| Apr 7Fri3 years ago | Counting of the OmerThe 49 days counted from the second night of Passover to Shavuot. Begins at sundown on Thu, April 6, 2023.Religion · Judaism · to May 25 · Hebcal | – | annual | HebcalComputed (rule) |
| Apr 30Sun3 years ago | Gahambar Maidyozarem (mid-spring)The first of the six five-day seasonal feasts (Gahambars), in the Fasli calendar.Religion · Zoroastrianism · to May 4 · avesta.org Zoroastrian calendars | – | annual | avesta.org Zoroastrian calendarsComputed (rule) |
| Apr 21Fri3 years ago | Festival of RidvanThe twelve days of Baha’u’llah’s stay in the Garden of Ridvan in 1863, the King of Festivals; Baha’i institutions are elected during it.Religion · Baha’i · to May 2 · Baha’i World Centre | – | annual | Baha’i World CentreComputed (rule) |
| PastApril 2023 | ||||
| Apr 30Sun3 years ago | Reunification Day (Vietnam)A public holiday in Vietnam, known locally as Ngày Giải phóng miền Nam, thống nhất đất nước.Holidays · Vietnam · Vietnam · Nager.Date | Vietnam | annual | Nager.Date |
| International Jazz DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Apr 29Sat3 years ago | Shōwa Day (Japan)A public holiday in Japan.Holidays · Japan · Japan · Nager.Date | Japan | annual | Nager.Date |
| Ninth Day of RidvanHoly day during the Festival of Ridvan. Begins at sunset the evening before.Religion · Baha’i · Baha’i World Centre | – | annual | Baha’i World CentreComputed (rule) | |
| International Day in Memory of the Victims of EarthquakesA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Apr 28Fri3 years ago | Devopsdays Cáceres 2023A two-day tech conference in Cáceres, Spain.Tech · Conferences · to Apr 29 · Cáceres, Spain · Independent | Cáceres, Spain; Independent | annual | Independent |
| Apr 27Thu3 years ago | 2023 NFL DraftThe NFL's annual draft of college players.Sports · NFL · to Apr 29 · Kansas City, Missouri · Wikipedia | Kansas City, Missouri | annual | Wikipedia |
| Apr 25Tue3 years ago | NDC Porto 2023A five-day tech conference in Porto, Portugal.Tech · Conferences · to Apr 29 · Porto, Portugal · Independent | Porto, Portugal; Independent | annual | Independent |
| Apr 28Fri3 years ago | 100th anniversary: The FA Cup final (crowd and police pictured) between Bolton Wanderers and West...In 1923, The FA Cup final (crowd and police pictured) between Bolton Wanderers and West Ham United was held on the opening day of the Empire Stadium in London.History · Anniversaries · Wikipedia | – | annual | Wikipedia |
| 50th anniversary: The album The Dark Side of the Moon by the British progressive rock band Pink...In 1973, The album The Dark Side of the Moon by the British progressive rock band Pink Floyd entered the Billboard Top LPs & Tape chart, on which it spent a...History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Terry Pratchett, born 1948 (75 years)English journalist, author, and screenwriter (died 2015).People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| World Day for Safety and Health at WorkA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Apr 26Wed3 years ago | PyData 2023A three-day tech conference in Seattle, WA.Tech · Conferences · to Apr 28 · Seattle, WA · Independent | Seattle, WA; Independent | annual | Independent |
| Apr 25Tue3 years ago | Great International Developer Summit 2023A four-day tech conference in Bengaluru, India.Tech · Conferences · to Apr 28 · Bengaluru, India · Independent | Bengaluru, India; Independent | annual | Independent |
| Apr 27Thu3 years ago | Amazon earnings (Q1 FY2023)Amazon reported Q1 FY2023 results after the market closed.Economy · Earnings · Amazon (AMZN) · Earnings | Amazon (AMZN) | quarterly | Earnings |
| Freedom Day (South Africa)A public holiday in South Africa.Holidays · South Africa · South Africa · Nager.Date | South Africa | annual | Nager.Date | |
| King's Day (Netherlands)A public holiday in the Netherlands, known locally as Koningsdag.Holidays · Netherlands · Netherlands · Nager.Date | Netherlands | annual | Nager.Date | |
| First quarter moonThe Moon is half lit (waxing).Sky · Moon phases · 4:20 pm CT · NASA | – | monthly | NASAComputed (rule) | |
| 175th anniversary: The French National Assembly under Victor Schœlcher proclaims the abolition of...In 1848, The French National Assembly under Victor Schœlcher proclaims the abolition of slavery within France and it's colonies following the February Revolution.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| AppFolio earnings (Q1 FY2023)AppFolio reported Q1 FY2023 results after the market closed.Economy · Earnings · AppFolio (APPF) · Earnings | AppFolio (APPF) | quarterly | Earnings | |
| Cloudflare earnings (Q1 FY2023)Cloudflare reported Q1 FY2023 results after the market closed.Economy · Earnings · Cloudflare (NET) · Earnings | Cloudflare (NET) | quarterly | Earnings | |
| Intel earnings (Q1 FY2023)Intel reported Q1 FY2023 results after the market closed.Economy · Earnings · Intel (INTC) · Earnings | Intel (INTC) | quarterly | Earnings | |
| Pinterest earnings (Q1 FY2023)Pinterest reported Q1 FY2023 results after the market closed.Economy · Earnings · Pinterest (PINS) · Earnings | Pinterest (PINS) | quarterly | Earnings | |
| Snap earnings (Q1 FY2023)Snap reported Q1 FY2023 results after the market closed.Economy · Earnings · Snap (SNAP) · Earnings | Snap (SNAP) | quarterly | Earnings | |
| Teradyne earnings (Q1 FY2023)Teradyne reported Q1 FY2023 results before the market opened.Economy · Earnings · Teradyne (TER) · Earnings | Teradyne (TER) | quarterly | Earnings | |
| Devops Days Phoenix 2023A tech conference in Phoenix, AZ.Tech · Conferences · Phoenix, AZ · Independent | Phoenix, AZ; Independent | annual | Independent | |
| Washington My Health My Data Act: HB 1155 signedGovernor signs My Health My Data Act.Tech · Compliance deadlines · Washington · Regulations | Washington | one-off | Regulations | |
| Apr 26Wed3 years ago | building IoT 2023A two-day tech conference in Munich, Germany.Tech · Conferences · to Apr 27 · Munich, Germany · Independent | Munich, Germany; Independent | annual | Independent |
| Apr 24Mon3 years ago | API Conference London 2023A four-day tech conference in London, United Kingdom.Tech · Conferences · to Apr 27 · London, United Kingdom · Independent | London, United Kingdom; Independent | annual | Independent |
| DevOps Conference London 2023A four-day tech conference in London, United Kingdom.Tech · Conferences · to Apr 27 · London, United Kingdom · Independent | London, United Kingdom; Independent | annual | Independent | |
| Serverless Architecture Conference London 2023A four-day tech conference in London, United Kingdom.Tech · Conferences · to Apr 27 · London, United Kingdom · Independent | London, United Kingdom; Independent | annual | Independent | |
| Apr 19Wed3 years ago | PyCon (US) 2023A tech conference in Salt Lake City, UT.Tech · Conferences · to Apr 27 · Salt Lake City, UT · Independent | Salt Lake City, UT; Independent | annual | Independent |
| Apr 26Wed3 years ago | Union Day (Tanzania)A public holiday in Tanzania, known locally as Sikukuu ya Muungano.Holidays · Tanzania · Tanzania · Nager.Date | Tanzania | annual | Nager.Date |
| Yom HaAtzma’ut (Israel Independence Day)Israel’s Independence Day. Begins at sundown on Tue, April 25, 2023.Religion · Judaism · Hebcal | – | annual | HebcalComputed (rule) | |
| Arno Allan Penzias, born 1933 (90 years)German-American physicist and academic, Nobel Prize laureate (died 2024).People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| Eugène Delacroix, born 1798 (225 years)French painter and lithographer (died 1863).People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| Jet Li, born 1963 (60 years)Chinese-Singaporean martial artist, actor, and producer.People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| Vicente Aleixandre, born 1898 (125 years)Spanish poet and author, Nobel Prize laureate (died 1984).People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Chernobyl Disaster Remembrance DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| World Intellectual Property DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| eBay earnings (Q1 FY2023)EBay reported Q1 FY2023 results after the market closed.Economy · Earnings · eBay (EBAY) · Earnings | eBay (EBAY) | quarterly | Earnings | |
| KLA earnings (Q3 FY2023)KLA reported Q3 FY2023 results after the market closed.Economy · Earnings · KLA (KLAC) · Earnings | KLA (KLAC) | quarterly | Earnings | |
| PTC earnings (Q2 FY2023)PTC reported Q2 FY2023 results after the market closed.Economy · Earnings · PTC (PTC) · Earnings | PTC (PTC) | quarterly | Earnings | |
| ServiceNow earnings (Q1 FY2023)ServiceNow reported Q1 FY2023 results after the market closed.Economy · Earnings · ServiceNow (NOW) · Earnings | ServiceNow (NOW) | quarterly | Earnings | |
| Tyler Technologies earnings (Q1 FY2023)Tyler Technologies reported Q1 FY2023 results after the market closed.Economy · Earnings · Tyler Technologies (TYL) · Earnings | Tyler Technologies (TYL) | quarterly | Earnings | |
| Vertiv earnings (Q1 FY2023)Vertiv reported Q1 FY2023 results before the market opened.Economy · Earnings · Vertiv (VRT) · Earnings | Vertiv (VRT) | quarterly | Earnings | |
| Apr 25Tue3 years ago | Microsoft earnings (Q3 FY2023)Microsoft reported Q3 FY2023 results after the market closed.Economy · Earnings · Microsoft (MSFT) · Earnings | Microsoft (MSFT) | quarterly | Earnings |
| Digital Services Act: First VLOP/VLOSE designationsCommission designated the first 19 very large online platforms and search engines (e.g. Amazon Store, Facebook, Google Search, TikTok, X). Obligations apply...Tech · Compliance deadlines · European Union · Regulations | European Union | one-off | Regulations | |
| Anzac Day (New Zealand)A public holiday in New Zealand.Holidays · New Zealand · New Zealand · Nager.Date | New Zealand | annual | Nager.Date | |
| Freedom Day (Portugal)A public holiday in Portugal, known locally as Dia da Liberdade.Holidays · Portugal · Portugal · Nager.Date | Portugal | annual | Nager.Date | |
| Liberation Day (Italy)A public holiday in Italy, known locally as Festa della Liberazione.Holidays · Italy · Italy · Nager.Date | Italy | annual | Nager.Date | |
| Sinai Liberation Day (Egypt)A public holiday in Egypt.Holidays · Egypt · Egypt · Nager.Date | Egypt | annual | Nager.Date | |
| RadonitsaThe Tuesday after Thomas Sunday, when Russian and Ukrainian Orthodox visit family graves.Religion · Eastern Orthodox · Orthodox Church in America | – | annual | Orthodox Church in AmericaComputed (rule) | |
| Yom HaZikaron (Israel’s Memorial Day)Israel’s day of remembrance for fallen soldiers and victims of terror, the day before Independence Day. Begins at sundown on Mon, April 24, 2023.Religion · Judaism · Hebcal | – | annual | HebcalComputed (rule) | |
| International Delegate’s DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| World Malaria DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Fiserv earnings (Q1 FY2023)Fiserv reported Q1 FY2023 results before the market opened.Economy · Earnings · Fiserv (FISV) · Earnings | Fiserv (FISV) | quarterly | Earnings | |
| Manhattan Associates earnings (Q1 FY2023)Manhattan Associates reported Q1 FY2023 results after the market closed.Economy · Earnings · Manhattan Associates (MANH) · Earnings | Manhattan Associates (MANH) | quarterly | Earnings | |
| Texas Instruments earnings (Q1 FY2023)Texas Instruments reported Q1 FY2023 results after the market closed.Economy · Earnings · Texas Instruments (TXN) · Earnings | Texas Instruments (TXN) | quarterly | Earnings | |
| Apr 24Mon3 years ago | Devopsdays Geneva 2023A two-day tech conference in Geneva, Switzerland.Tech · Conferences · to Apr 25 · Geneva, Switzerland · Independent | Geneva, Switzerland; Independent | annual | Independent |
| european lisp symposium 2023A two-day tech conference, held online.Tech · Conferences · to Apr 25 · Online · Independent | Online; Independent | annual | Independent | |
| International Day of Multilateralism and Diplomacy for PeaceA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Cadence earnings (Q1 FY2023)Cadence reported Q1 FY2023 results after the market closed.Economy · Earnings · Cadence (CDNS) · Earnings | Cadence (CDNS) | quarterly | Earnings | |
| Tenable earnings (Q1 FY2023)Tenable reported Q1 FY2023 results after the market closed.Economy · Earnings · Tenable (TENB) · Earnings | Tenable (TENB) | quarterly | Earnings | |
| Apr 23Sun3 years ago | Devopsdays Denver 2023A two-day tech conference in Denver, CO.Tech · Conferences · to Apr 24 · Denver, CO · Independent | Denver, CO; Independent | annual | Independent |
| 2023 London MarathonOne of the six World Marathon Majors.Sports · Marathons and athletics · London · Wikipedia | London | annual | Wikipedia | |
| 675th anniversary: The first knights of the Order of the Garter, an order of chivalry founded by...In 1348, The first knights of the Order of the Garter, an order of chivalry founded by King Edward III of England, were appointed.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Eid al-Fitr Third Day (Turkey)A public holiday in Turkey, known locally as Ramazan Bayramı 3. Gün.Holidays · Turkey · Turkey · Nager.Date | Turkey | annual | Nager.Date | |
| National Independence & Children's Day (Turkey)A public holiday in Turkey, known locally as Ulusal Egemenlik ve Çocuk Bayramı.Holidays · Turkey · Turkey · Nager.Date | Turkey | annual | Nager.Date | |
| English Language DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| International Girls in ICT DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Spanish Language DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| World Book and Copyright DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Apr 14Fri3 years ago | Coachella 2023Two weekends of the Coachella Valley Music and Arts Festival.Culture · Music · to Apr 23 · Indio, California · Wikipedia | Indio, California | annual | Wikipedia |
| Apr 22Sat3 years ago | Lyrids meteor shower peakUp to about 18 meteors an hour under a dark sky at the peak (IMO zenithal hourly rate); best after midnight.Sky · Meteor showers · International Meteor Organization | – | annual | International Meteor OrganizationComputed (rule) |
| 950th anniversary: Gregory VII was elected pope following the death of Alexander IIIn 1073, Gregory VII was elected pope following the death of Alexander II.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Mother Earth DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Eid al-Fitr Second Day (Turkey)A public holiday in Turkey, known locally as Ramazan Bayramı 2. Gün.Holidays · Turkey · Turkey · Nager.Date | Turkey | annual | Nager.Date | |
| Hari Raya Puasa (Singapore)A public holiday in Singapore.Holidays · Singapore · Singapore · Nager.Date | Singapore | annual | Nager.Date | |
| Akshaya TritiyaTentativeAn auspicious day for new beginnings and buying gold; for Jains, the end of Rishabhanatha’s year-long fast. Vaishakha, Shukla 3. Regional dates can differ...Religion · Hinduism · Wikipedia | – | annual | WikipediaComputed (rule) | |
| 75th anniversary: Civil War in Mandatory Palestine: The Jewish paramilitary group Haganah...In 1948, Civil War in Mandatory Palestine: The Jewish paramilitary group Haganah captured Haifa from the Arab Liberation Army.History · Anniversaries · Wikipedia | – | annual | Wikipedia | |
| Louise Glück, born 1943 (80 years)American poet (died 2023).People · Birth anniversaries · Wikipedia | – | annual | Wikipedia | |
| International Day of Greening the PlanetA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Apr 21Fri3 years ago | Eid al-FitrTentativeThe festival that ends Ramadan. 10/1/1444 AH in the Umm al-Qura calendar. Begins the evening before; the actual date depends on local moon sighting and can...Religion · Islam · Umm al-Qura calendar | – | annual | Umm al-Qura calendarComputed (rule) |
| First Day of RidvanBaha’u’llah’s declaration in the Garden of Ridvan, 1863: the start of the twelve-day Festival of Ridvan. Begins at sunset the evening before.Religion · Baha’i · Baha’i World Centre | – | annual | Baha’i World CentreComputed (rule) | |
| Groundation DayHaile Selassie’s visit to Jamaica on April 21, 1966.Religion · Rastafari · BBC Religions: Rastafari holy days | – | annual | BBC Religions: Rastafari holy daysComputed (rule) | |
| Eid al-Fitr First Day (Turkey)A public holiday in Turkey, known locally as Ramazan Bayramı 1. Gün.Holidays · Turkey · Turkey · Nager.Date | Turkey | annual | Nager.Date | |
| Tiradentes (Brazil)A public holiday in Brazil, known locally as Dia de Tiradentes.Holidays · Brazil · Brazil · Nager.Date | Brazil | annual | Nager.Date | |
| World Creativity and Innovation DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |
| Apr 20Thu3 years ago | Devopsdays Birmingham, AL 2023A two-day tech conference in Birmingham, AL.Tech · Conferences · to Apr 21 · Birmingham, AL · Independent | Birmingham, AL; Independent | annual | Independent |
| Laserfiche Empower 2023A two-day tech conference in Dallas, Dallas-Fort Worth, TX.Tech · Conferences · to Apr 21 · Dallas, Dallas-Fort Worth, TX · Independent | Dallas, Dallas-Fort Worth, TX; Independent | annual | Independent | |
| Apr 19Wed3 years ago | InflectraCon 2023A three-day tech conference in Washington, Washington DC, DC.Tech · Conferences · to Apr 21 · Washington, Washington DC, DC · Independent | Washington, Washington DC, DC; Independent | annual | Independent |
| Apr 17Mon3 years ago | KubeCon + CloudNativeCon Europe 2023A five-day tech conference in Amsterdam, Netherlands.Tech · Conferences · to Apr 21 · Amsterdam, Netherlands · Linux Foundation | Amsterdam, Netherlands; Linux Foundation | annual | Linux Foundation |
| Apr 20Thu3 years ago | First Day of Summer (Iceland)A public holiday in Iceland, known locally as Sumardagurinn fyrsti.Holidays · Iceland · Iceland · Nager.Date | Iceland | annual | Nager.Date |
| Chinese Language DayA United Nations international day.Observances · UN international days · United Nations | – | annual | United Nations | |