All articles starting with J
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January 4
January 4, fourth day of the Gregorian year, marked by Myanmar's 1948 Independence Day, Utah's 1896 statehood, the 2007 election of Nancy Pelosi as first female Speaker, the 2010 Burj Khalifa opening, and World Braille Day.
January 5
January 5, the fifth day of the Gregorian year; notable for the 1933 Golden Gate Bridge construction start, the 1953 Waiting for Godot premiere, Ford's $5 day (1914), and the 2005 discovery of Eris.
January 6
January 6, the sixth day of the Gregorian year, is the date of Epiphany (Three Kings Day), Armenian Christmas, and the 2021 U.S. Capitol attack; notable events include Harold II's 1066 coronation and Morse's 1838 telegraph demonstration.
January 6 United States Capitol attack
The January 6 United States Capitol attack (Capitol riot, January 6 insurrection) was the January 6, 2021 mob assault on the Capitol disrupting the 2020 electoral vote certification, investigated by the House Select Committee and later largely erased by Trump's 2025 pardons.
January 7
January 7, the seventh day of the Gregorian year, is Orthodox Christmas Day for Julian-calendar churches and marks anniversaries including Galileo's 1610 sighting of Jupiter's moons, the 1927 transatlantic telephone service, the 1979 fall of the Khmer Rouge, and the 2015 Charlie Hebdo attack.
January 8
January 8, the eighth day of the Gregorian year: date of the first State of the Union (1790), the Battle of New Orleans (1815), the ANC's founding (1912), Wilson's Fourteen Points (1918), and birthdays of Elvis Presley, Stephen Hawking, and David Bowie.
January effect
The January effect is a calendar pattern in which small-cap stocks have historically outperformed large-cap stocks in January, especially in the first trading days of the year.
January Events in Vilnius
The January Events in Vilnius (Sausio įvykiai) were the Soviet military attempt of January 1991 to crush Lithuania's restored independence, killing 13 civilians at the Vilnius TV Tower.
January Jones
January Jones (born 1978) is an American actress and former model, best known as Betty Draper on Mad Men (2007–2015), earning Emmy and Golden Globe nominations; films include American Wedding and X-Men: First Class.
January Storm
January Storm (Январский гром) names two events: the 14–30 January 1944 Leningrad Front offensive (Krasnoselsko-Ropshinskaya operation) that fully lifted the Siege of Leningrad, and the January 1967 Shanghai rebel power seizure led by Zhang Chunqiao that launched China's Cultural Revolution power seizures.
January Uprising
The January Uprising, also called the January Insurrection, was a Polish revolt against Russian rule that broke out in Warsaw in January 1863 and was defeated by mid-1864.
January–February 2026 Balochistan attacks
January–February 2026 Balochistan attacks: BLA-led Operation Herof 2.0 with BLF, striking 13 districts on 31 January 2026; 33 officially killed, 92 militants reported dead, Mastung prison break, Nushki siege, conflicting casualty counts.
January–February 2026 North American cold wave
The January–February 2026 North American cold wave pushed Arctic air across the United States from January 22, with Winter Storm Fern leaving over 470,000 without power and dozens dead.
Janus
Janus (Ianus), principal Roman god of doorways, gates, beginnings, and transitions, depicted two-faced; no Greek equivalent. January named for him; Janus Geminus gates open in war, closed in peace.
Janus Friis
Janus Friis is a technology entrepreneur who co-founded Skype with Niklas Zennström, sold to eBay in 2005 for about $2.6 billion, and later founded Rdio and co-founded Starship Technologies.
Janus kinase
Janus kinases (JAK1, JAK2, JAK3, TYK2), also called just another kinases apocryphally, are non-receptor tyrosine kinases with FERM-SH2-pseudokinase-kinase domains that drive cytokine JAK-STAT signaling and are targeted by JAK inhibitor drugs.
Janus kinase 2
Janus kinase 2 (Jak2) is a non-receptor tyrosine kinase that relays cytokine signals through the JAK-STAT pathway, and its V617F mutation causes myeloproliferative neoplasms like polycythemia vera.
Janus kinase inhibitor
Janus kinase (JAK) inhibitors, or jakinibs, are oral small-molecule drugs blocking JAK1, JAK2, JAK3, or TYK2 in the JAK-STAT pathway; tofacitinib (2012) was first, later baricitinib, upadacitinib, filgotinib, with boxed warnings for cardiovascular, cancer, and clot risks.
Janus micromotor
A Janus micromotor is a self-propelled micro- or nanoscale particle with two chemically distinct sides, propelling through fluid by bubble recoil, diffusiophoresis, or electrophoresis for applications like drug delivery.
Janus MoSSe
Janus molybdenum disulfide selenide (MoSSe) is a two-dimensional semiconductor in the transition metal dichalcogenide family, first synthesized in 2017, whose different sulfur and selenium faces create an electric dipole studied for photovoltaics and spintronics.
Janus particles
Janus particles are micro- or nanoparticles whose surface is divided into two or more regions with distinct chemical or physical properties, named after the two-faced Roman god Janus.
Janus Theeuwes
Janus Theeuwes (Adrianus Cornelis Theeuwes, 1886-1975), Dutch archer from Rijen; won 1920 Antwerp Olympic gold in men's team target archery at 28 metres, top-scoring the Dutch team with 443 points.
Janus transition metal dichalcogenide
Janus transition metal dichalcogenide monolayers, named for the two-faced Roman god, are 2D semiconductors of form MXY with different chalcogens on each face, giving an intrinsic vertical dipole; MoSSe was first made in 2017.
Janus van Merrienboer
Janus van Merrienboer (Adrianus, 1894-1947), Dutch archer of Concordia Florebit, Oud Gastel; won 1920 Antwerp Olympic gold in team target archery 28m, scoring 388 of 540.
Janus-Pro
Janus-Pro is a unified multimodal understanding-and-generation model released by DeepSeek on January 27, 2025, in 1B and 7B sizes, generating images from text within a single autoregressive model.
Janussan
Janussan, also spelled Jannusan, is a burial mound site on Bahrain's north coast, with Early Dilmun graves from about 2000 BCE and mounds over 10 m high.
Janussoni
Janussoni (जाणुस्सोणि) was a wealthy mahāsāla brahmin who lived at Sāvatthī in Kosala and supported the Buddha as a lay follower, appearing in 14 Pali suttas.
Janusz Bujnicki
Janusz Bujnicki is a Polish bioinformatician and structural biologist who heads a laboratory at IIMCB in Warsaw and created the MODOMICS database of RNA modifications.
Janusz Kamiński
Janusz Zygmunt Kamiński (born 1959) is a Polish cinematographer and director, Steven Spielberg's primary DP since Schindler's List (1993), with Oscars for Schindler's List and Saving Private Ryan and nominations for Amistad, War Horse, and Lincoln.
Janusz Korczak
Janusz Korczak, pen name of Henryk Goldszmit, was a Polish Jewish pediatrician and educator who ran the Dom Sierot orphanage in Warsaw and is seen as a founder of the children's rights movement.