| January 1 | Last day of the Julian calendar in Finland |
| January 2 | Dodgers trade Casey Stengel and Cutshaw to Pitts for Grimes and Mamaux |
| January 2 | NHL Montreal Wanderers disband after Westmount arena burns down |
| January 3 | U.S. employment service opens as a unit of Department of Labor |
| January 5 | British premier Lloyd George demand for unified peace |
| January 8 | Mississippi becomes 1st state to ratify 18th amendment (prohibition) |
| January 8 | President Wilson outlines his 14 points for peace after WW I |
| January 12 | Montreal Canadien Joe Malone scores 5 goals beating Ottawa 9-4 |
| January 14 | Finland and U.S.S.R. adopts New Style (Gregorian) calendar |
| January 19 | Soviets disallows a Constitution Assembly |
| January 22 | Ukraine proclaimed a free republic |
| January 25 | Russia declared a republic of Soviets |
| January 27 | "Tarzan of the Apes," 1st Tarzan film, premieres at Broadway Theater |
| January 28 | Strike on Berlin ammunition's factory |
| January 28 | Trotsky becomes leader of Reds |
| February 1 | Franz Lehars opera "Wo die Lerche singt," premieres in Budapest |
| February 1 | Kern, Bolton and Wodehouse's musical premieres in New York City |
| February 1 | Russia adopts Gregorian calender (becomes Feb 14) |
| February 3 | Twin Peaks Tunnel longest (11,920') streetcar tunnel begins service |
| February 5 | 1st U.S. pilot to down an enemy airplane, Stephen W. Thompson |
| February 5 | Separation of church and state begins in U.S.S.R. |
| February 6 | Britain grants women (30 and over) vote |
| February 8 | "Stars and Stripes," weekly U.S. Armed Forces newspaper, 1st published |
| February 9 | Army chaplain school organizes at Ft. Monroe Va |
| February 9 | Sacha Guitry's "Deburan," premieres in Paris |
| February 14 | H Atteridge and S Rombergs musical "Sinbad," premieres in New York City |
| February 14 | U.S.S.R. adopts New Style (Gregorian) calendar (originally Feb 1) |
| February 15 | 1st WW I U.S. Army troop ship torpedoed and sunk by Germany, off Ireland |
| February 15 | Estonia, Latvia and Lithuania adopt Gregorian calendar |
| February 16 | Lithuania declares independence from Russia and Germany (National Day) |
| February 21 | Australians chase Turkish troop out of Jericho, Dutch Palestine |
| February 22 | Germany claims Baltic states, Finland and Ukraine from Russia |
| February 24 | Estonia declares independence from Russia |
| February 26 | Stands at Hong Kong Jockey Club collapse and burn, killing 604 |
| March 2 | New York Yankees purchase 1st baseman George Burns from Detroit Tigers and immediately trades him to Philadelphia A's |
| March 3 | Richard Goring's "Seeschlacht," premieres in Berlin |
| March 3 | Treaty of Brest-Litovsk: Germany, Austria and Russia sign |
| March 4 | Terek Autonomous Republic established in RSFSR (until 1921) |
| March 6 | U.S. naval boat "Cyclops" disappears in Bermuda Triangle |
| March 7 | H. Carroll and J. McCarthy's musical "Oh, Look!," premieres in New York City |
| March 7 | President Wilson authorizes U.S. Army's Distinguished Service Medal |
| March 9 | Russian Bolshevik Party becomes the Communist Party |
| March 9 | Ukrainian mobs massacre Jews of Seredino Buda |
| March 9 | Wageningen Agricultural College Netherlands opens |
| March 11 | Moscow becomes capital of revolutionary Russia |
| March 11 | Save the Redwoods League founded |
| March 13 | 1st NHL championship: Mont Canadiens beat Toronto Arenas, outscoring them 10-7 in a 2 game set |
| March 13 | American Red Magen David (Jewish Red Cross) forms |
| March 14 | 1st concrete ship to cross the Atlantic (Faith) is launched, SF |
| March 16 | Geoffrey O'Hara's "K-K-K-Katy" song published |
| March 17 | U.S. Ladies Figure Skating championship won by Rosemary Beresford |
| March 17 | U.S. Mens Figure Skating championship won by Nathaniel Niles |
| March 18 | Soccer team SON OF Meerssen forms |
| March 18 | Socialist Youth AJC organizes in Amsterdam |
| March 19 | Congress authorizes time zones and approves daylight saving time |
| March 19 | S. Potter becomes 1st U.S. pilot to shoot down a German seaplane |
| March 21 | During WW I Germany launches Somme offensive |
| March 23 | Alick Wickham dives 200' into Australia's Yarra River |
| March 23 | Crepy-en-Laonnoise: German artillery shells Paris, 256 killed |
| March 23 | Lithuania proclaims independence |
| March 23 | Paris bombs "Thick Bertha's Dike" (nickname for the widow Krupp) |
| March 30 | Stanley Cup: Toronto Arenas (NHL) beat Vancouver Millionaires (PCHA), 3 games to 2 |
| March 31 | 1st daylight savings time in U.S. goes into effect |
| April 1 | England's Royal Flying Corps replaced by Royal Air Force |
| April 1 | Henry Miller's Theater opens at 124 W 43rd St. New York City |
| April 3 | House of Representatives accepts American Creed written by William Tyler |
| April 4 | Battle of Somme, ends |
| April 4 | Food riot in Amsterdam |
| April 9 | Latvia proclaims independence |
| April 13 | Electrical fire kills 38 mental patients at Oklahoma State Hospital |
| April 14 | Douglas Campbell is 1st U.S. ace pilot (shooting down 5th German plane) |
| April 15 | Clemenceau publishes secret French/Austrian documents |
| April 18 | Cleveland center fielder Tris Speaker turns an unassisted double play |
| April 23 | Battle of Zeebrugge ends |
| April 23 | Dover Patrol overthrows Germany U-boat in East Sea |
| April 23 | National Urban League forms |
| April 27 | Giants' 9-0 winning start and Dodgers' 0-9 losing streak are stopped |
| April 29 | Tris Speaker ties career outfield record of 4 unassisted double plays |
| April 30 | Orange Nassau soccer team forms in Groningen |
| May 4 | Yankees set record with 8 sacrifices, beat Red Sox's Babe Ruth 5-4 |
| May 10 | HMS Vindictive sunk to block entrance of Ostend Harbor |
| May 11 | 44th Kentucky Derby: William Knapp on Exterminator wins in 2:10.8 |
| May 13 | 1st U.S. airmail stamps issued (24 cents ) |
| May 14 | Indians' Stan Coveleski sets club record for most innings pitched (19) |
| May 14 | Sunday baseball is made legal in Washington D.C. |
| May 15 | 1st airmail postal service (New York, Philadelphia and Washington D.C.) |
| May 15 | 1st regular airmail service (between New York and Washington) inaugurated |
| May 15 | 43rd Preakness: Johnny Loftus aboard War Cloud wins in 1:53.6 |
| May 15 | 44th Preakness: Charles Peak aboard Jack Hare, Jr. wins in 1:53.4 |
| May 15 | Greeks troops lands at Smyrna |
| May 15 | Washington Senator Walter Johnson pitches 1-0, 18 inning game |
| May 18 | Netherlands Indian Volksraad installed in Batavia |
| May 18 | TNT explosion in chemical factory in Oakdale, Pennsylvania kills 200 |
| May 19 | Washington 1st Sunday game, Senators beat Cleveland 1-0 in 18 innings |
| May 20 | 1st electrically propelled warship (New Mexico) |
| May 21 | House of Representatives passes amendment allowing women to vote |
| May 23 | King Oil/Shell refinery on Curacao officially opens |
| May 24 | Cleveland beats Yankees 3-2 in 19 inning |
| May 26 | Georgian Social Democratic Republic declares independence from Russia |
| May 28 | Tatars declares Azerbaijan, in Russian Caucasus, independent |
| June 1 | Excelsior Maassluis soccer team forms in Maassluis |
| June 1 | White Sox losing 5-4 against New York Yankees, load the bases in 9th with no outs Chick Gandil lines to Frank Baker who turns a triple play |
| June 3 | Supreme Court rules child labor laws unconstitutional |
| June 6 | Battle of Belleau Wood, 1st U.S. victory of WW I |
| June 8 | Nova Aquila, brightest nova since Kepler's nova of 1604, discovered |
| June 12 | 1st airplane bombing raid by an American unit, France |
| June 13 | Phillies and Cards tie 8-8 in 19 innings |
| June 15 | 1" of snow falls in Northern Pennsylvania |
| June 22 | 32nd U.S. Womens Tennis: Molla Bjurstedt Mallory beats E E Goss (64 63) |
| June 22 | Circus train rammed by troop train kills 68, Ivanhoe, Illinois |
| June 23 | Boston Red Sox Dutch Leonard's 2nd no-hitter beats Tigers, 5-0 |
| June 25 | Baku-Turkish Communist Party forms |
| July 3 | SDAP'er Suze Groenweg elected 1st woman in Dutch parliament |
| July 4 | Altar dedicated at full-scale replica of Stonehenge at Maryhill, Wa |
| July 8 | Babe Ruth's blast over the fence in Fenway scores Amos Strunk, the Red Sox win 1-0 over Cleveland, prevailing rules reduce Babe's Hhome runR to a triple |
| July 9 | 101 killed and 171 injured in worst U.S. train wreck, Nashville, Tennessee |
| July 9 | Congress creates Distinguished Service Medal |
| July 10 | Russian Soviet Federal Socialist Republic forms |
| July 12 | Japanese battleship explodes in Bay of Tokayama, 500 killed |
| July 14 | Dutch government reclaims South seas |
| July 15 | 2nd Battle of Marne began during WW I |
| July 17 | Longest errorless game, Cubs beat Phillies 2-1 in 21 innings |
| July 18 | U.S. and French forces launch Aisne-Marne offensive in WW I |
| July 19 | German armies retreat across Marne River in France (WW I) |
| July 19 | Washington catcher Eddie Ainsmith applies for deferment from the draft Secretary of War Newton D. Baker rules baseball players are not draft exempt |
| July 22 | Lightning kills 504 sheep in Utah's Wasatch National Park |
| July 25 | Annette Adams sworn in as 1st woman district attorney of U.S., California |
| July 25 | Race riot in Chester Pennsylvania (3 blacks and 2 whites killed) |
| July 26 | Race riot in Philadelphia (3 whites and 1 black killed) |
| July 27 | Socony 200, 1st concrete barge in U.S., launched to carry oil, New York |
| August 1 | British troops enter Vladivostok |
| August 1 | Pittsburgh Pirates beat Boston Braves, 2-0, in 21 innings |
| August 6 | Ferdinand Foch becomes marshal of France |
| August 6 | In WW I 2nd battle of the Marne ends |
| August 8 | Canada/Australian/British breakthrough with 600 tanks at Amiens |
| August 9 | Reds manager Christy Mathewson suspects Hal Chase of taking bribes to fix games, and suspends him "for indifferent play" |
| August 11 | Battle of Amiens ends in WW I, Allieds beat Germans |
| August 15 | 1st full length cartoon (Sinking of Lusitania) |
| August 15 | Russia severs diplomatic ties with U.S. |
| August 16 | U.S. troops overthrows Archangelsk |
| August 17 | British troops attack Baku Azerbaijan |
| August 17 | Samuel Riddle buys Man o'War for $5,000 |
| August 17 | Turkish troops overthrow Caukasus |
| August 19 | Irving Berlin's musical "Yip Yip Yaphank," premieres in New York City |
| August 20 | Britain opens offensive on Western front during WW I |
| August 24 | Chicago Cubs, win earliest pennent ever (season ended Sept 2) |
| August 24 | Sect Baker grants extended exemption to World Series players |
| August 26 | W Smith and F Bacons "Lightnin'," premieres in New York City |
| August 27 | Christy Mathewson resigns as Reds manager to accept a commission as a captain in chemical warfare branch of Army |
| August 27 | Dr. Joseph L Johnson named minister to Liberia |
| August 28 | Tris Speaker suspended for season due to assault on ump Tom Connolly |
| August 30 | Czechoslovakia forms independence republic |
| August 30 | Fanya Kaplan shoots at Lenin |
| August 30 | Lenin, new leader of Soviet Russia, shot and wounded after speech |
| August 31 | Boston Red Sox, win earliest AL pennent ever (season ended Sept 2) |
| September 1 | Baseball season ends due to WW I |
| September 1 | Ty Cobb pitches 2 innings against Browns |
| September 1 | U.S. troops land in Vladivostok, Siberia, stay until 1920 |
| September 3 | 38th U.S. Mens Tennis: R L Murray beats William T Tilden (63 61 75) |
| September 3 | 5 soldiers hanged for alleged participation in Houston riot of 1917 |
| September 3 | Allies forced Germans back across Hindenburg Line |
| September 4 | Jhr Ch Ruys de Beerenbrouck becomes 1st Dutch Catholic premier |
| September 4 | U.S. troops land in Archangel, Russia, stay 10 months |
| September 5 | Due to WW I, 15th World Series begins a month early |
| September 9 | Dutch government of Ruijs de Beerenbrouck forms |
| September 10 | Players on both sides threaten to strike the World Series unless they are guaranteed $2,500 to the winners and $1,000 each for the losers |
| September 11 | Boston Red Sox beat Chicago Cubs, 4 games to 2 in 15th World Series |
| September 12 | During WW I, U.S. forces launch an attack on German-occupied St. Mihiel |
| September 13 | Train accident at Weesp, Netherlands, kills 42 |
| September 15 | CH Chubb gives Stonehenge to English state |
| September 18 | Battle of Megiddo (Palestine) starts |
| September 20 | Royal Dutch Blast furnace and Steel factory opens in Hague |
| September 26 | Battle of the Argonne, final major battle of WW I |
| September 29 | Allied forces scored a decisive breakthrough of Hindenburg Line |
| October 3 | Boris becomes king of Bulgaria |
| October 3 | Czar Ferdinand I of Bulgaria does distance of throne |
| October 3 | Selwyn Theater opens at 229 W 42nd St. New York City |
| October 4 | Musical "Sometime" with Mae West premieres in New York City |
| October 6 | U.S. ship Otranto sinks between Scotland and Ireland, 425 die |
| October 8 | 7 U.S. soldiers are surrounded by Germans in France, Alvin York is given command and shoots 20 Germans and captures 132 more |
| October 8 | Sergeant Alvin York single-handedly kills 25, captures 132 Germans |
| October 10 | Baden's Geisz forms government |
| October 12 | 1st use of iron lung (Boston's Children Hospital) |
| October 12 | Cloquet Minnesota and 25 other communities destroyed by forest fire, 559 die |
| October 12 | Forest fire in Minnesota and Northern Wisconsin kills about 800 |
| October 15 | British Q-ship Cymric sinks British submarine J6 |
| October 17 | De Kooy airport in Netherlands opens |
| October 17 | Yugoslavia proclaims itself a republic |
| October 18 | Czechoslovakia declares Independence from Austro-Hungarian Empire |
| October 18 | NHL's Quebec Bulldogs sold to a Toronto businessman P J Quinn |
| October 18 | Russian 10th Army drives out White armies of Tsaritsyn (Stalingrad) |
| October 20 | Germans, aimed at an armistice, Germans agree to further concessions |
| October 21 | Margaret Owen sets world typing speed record of 170 wpm for 1 min |
| October 23 | Actor Charlie Chaplin (29) weds Mildred Harris (17) |
| October 25 | Canadian steamship "Princess Sophia" hit a reef off Alaska, 398 die |
| October 26 | Soldier revolt at Harskamp Veluwe |
| October 28 | Czechoslovakia gains independence as Austria-Hungary breaks up |
| October 30 | Slovakia asks for creation of Czechoslovakian state |
| October 31 | Spanish flu-virus kills 21,000 in U.S. in 1 week |
| November 1 | 102 die in a New York City BMT subway derailment at Malbone Street Brooklyn |
| November 1 | Yugoslav battleship Viribus Unitis sunk by Italians |
| November 3 | Austro-Hungarian Empire disolves |
| November 3 | Poland proclaims independence from Russia after WW I |
| November 4 | Kiel in hands of revolutionary sailors |
| November 6 | Republic of Poland proclaimed |
| November 6 | Supreme commander of the army General Cutters resigns |
| November 7 | Goddard demonstrates tube-launched solid propellant rockets |
| November 7 | United Press erroneously reports WW I armistice had been signed |
| November 7 | Vladimir Mayakovsky's "Misteriya Buff," premieres in Petrograd |
| November 8 | Pro-German supreme commander general Cutters lay-offs |
| November 9 | Bavaria proclaims itself a republic |
| November 9 | Kaiser Wilhelm II abdicates after German defeat in WW I |
| November 9 | Republic Germany proclaimed |
| November 10 | German emperor Wilhelm II flees to Netherland |
| November 10 | Independence of Poland proclaimed by Jozef Pilsudski |
| November 11 | Armistice Day-WW I ends (at 11 AM on Western Front) |
| November 11 | Dutch SDAP leader Troelstra announces revolution |
| November 11 | Emperor Charles I of Austria abdicates |
| November 11 | Germany surrenders ending WW I, Allies and Germany sign armistice |
| November 11 | Poland declares independence |
| November 12 | Emperor Karl of Austria-Hungary abdicates, Austria becomes a republic |
| November 13 | Monarch Friedrich of Waldeck and Pyrmont abdicates throne |
| November 13 | Russia cancels Treaty of Brest-Litovsk |
| November 13 | Stahlhelm forms (anti communist/Polish/French) in Magdenburg |
| November 14 | Republic of Czechoslovakia created with T.G. Masaryk as president |
| November 16 | Hungarian People's Republic declared |
| November 17 | Social Democratic Party becomes Communistc Party Holland: CPH |
| November 18 | Brussels free Stofnar |
| November 18 | Latvia declares independence from Russia |
| November 21 | 2 German ammunition trains explode in Hamont Belgium, 1,750 die |
| November 21 | Polish soldiers organize a pogrom against Jews of Galicia Poland |
| November 22 | Bathe: grand duke Frederik II resigns |
| November 22 | King Albert I's triumphant procession through Brussels |
| November 22 | Marshal J Pilsudski becomes 1st president (dictator) of Poland |
| November 22 | Polish forces attack Jewish community of Lemberg (Lvov) |
| November 24 | Bela Can forms Hungarian Communist Party |
| November 28 | Emperor Wilhelm of Prussia and Germany, abdicates |
| November 29 | Serbia annexes Montenegro |
| December 1 | Danish parliament passed an act to grant Iceland independence |
| December 1 | Iceland becomes independent state under Danish crown |
| December 1 | Serbian-Croatian-Slovic kingdom proclaimed in Belgrade |
| December 1 | Yugoslavia declares independence; monarchy established |
| December 4 | President Wilson sails for Versailles Peace Conference in France, 1st chief executive to travel outside U.S. while in office |
| December 5 | Oil refinery on Curacao opens |
| December 9 | French troops occupies Mainz |
| December 10 | John A Heyder becomes president of baseball's National League |
| December 13 | U.S. Army of occupation crosses Rhine, enters Germany |
| December 13 | Wilson, becomes 1st to make a foreign visit as president (France) |
| December 14 | Giacomo Puccini's opera "Il Trittico," premieres in New York City |
| December 15 | American Jewish Congress holds its 1st meeting |
| December 16 | Jack Dempsey KOs Carl Morris in 14 seconds |
| December 19 | Robert Ripley began his "Believe It or Not" column (New York Globe) |
| December 20 | Eugene O'Neill's "Moon of the Caribees," premieres in New York City |
| December 21 | Red Sox trade Dutch Leonard, Ernie Shore and Duffy Lewis to Yankees for Ray Caldwell and Slim Love, Frank Gilhooey, Al Walters and $15,000 |
| December 26 | 1st day of 1st-class cricket in Australia after WW I (Vic vs. NSW) |
| December 30 | John E Hoover decides to be called J Edgar Hoover |
| December 31 | Kid Gleason replaces Pants Rowland as White Sox manager |
BrainyHistory
