1905 (MCMV) was a common year starting on Sunday (dominical letter A) of the Gregorian calendar and a common year starting on Saturday (dominical letter B) of the Julian calendar, the 1905th year of the Common Era (CE) and Anno Domini (AD) designations, the 905th year of the 2nd millennium, the fifth year of the 20th century, and the sixth year of the 1900s decade. As of the start of 1905, the Gregorian calendar was 13 days ahead of the Julian calendar, which remained in localised use until 1918.

As the second year of the massive Russo-Japanese War began, more than 100,000 died in the largest world battles of that era, and the war chaos lead to a revolution against the Tsar. (Shostakovich's 11th Symphony is subtitled "The Year 1905" to commemorate this.) Canada and the U.S. expanded west, with the Alberta and Saskatchewan provinces and the founding of Las Vegas. 1905 is additionally the annus mirabilis of Albert Einstein, who published papers which lay the foundations for quantum physics, introduced the special theory of relativity, explained Brownian motion, and established mass–energy equivalence.

Events

January

February

March

March 3: Nicholas II creates the Duma.

April

May

May 15: Las Vegas is founded with auction of 110 acres (0.45 km2)

June

July

August

September

October

November

December

Date unknown

Births

January

February

March–April

May–June

July–August

September–October

November–December

Date unknown

Deaths

January

February

March

April

May

June

July

August

September

October

November

December

Date Unknown

Nobel Prizes