| 21721 | February 25 | Holiday and observance | Day of the Revolution (Suriname) |
| 21722 | February 25 | Holiday and observance | Kitano Baika-sai or "Plum Blossom Festival" (Kitano Tenman-gū Shrine, Kyoto) |
| 21723 | February 25 | Holiday and observance | Memorial Day for the Victims of the Communist Dictatorships (Hungary) |
| 21724 | February 25 | Holiday and observance | National Day (Kuwait) |
| 21725 | February 25 | Holiday and observance | People Power Day (Philippines) |
| 21726 | February 25 | Holiday and observance | Soviet Occupation Day (Georgia) |
| 21727 | February 26 | Event | 747 BC – Epoch (origin) of Ptolemy's Nabonassar Era. |
| 21728 | February 26 | Event | 364 – Valentinian I is proclaimed Roman Emperor. |
| 21729 | February 26 | Event | 1233 – Mongol–Jin War: The Mongols capture Kaifeng, the capital of the Jin dynasty, after besieging it for months. |
| 21730 | February 26 | Event | 1266 – Battle of Benevento: An army led by Charles, Count of Anjou, defeats a combined German and Sicilian force led by Manfred, King of Sicily. Manfred is killed in the battle and Pope Clement IV invests Charles as king of Sicily and Naples. |
| 21731 | February 26 | Event | 1616 – Galileo Galilei is formally banned by the Roman Catholic Church from teaching or defending the view that the earth orbits the sun. |
| 21732 | February 26 | Event | 1794 – The first Christiansborg Palace in Copenhagen burns down. |
| 21733 | February 26 | Event | 1815 – Napoleon Bonaparte escapes from Elba. |
| 21734 | February 26 | Event | 1876 – Japan and Korea sign a treaty granting Japanese citizens extraterritoriality rights, opening three ports to Japanese trade, and ending Korea's status as a tributary state of Qing dynasty China. |
| 21735 | February 26 | Event | 1909 – Kinemacolor, the first successful color motion picture process, is first shown to the general public at the Palace Theatre in London. |
| 21736 | February 26 | Event | 1914 – HMHS Britannic, sister to the RMS Titanic, is launched at Harland and Wolff shipyard in Belfast. |
| 21737 | February 26 | Event | 1916 – Tokelau annexed by the United Kingdom. |
| 21738 | February 26 | Event | 1917 – The Original Dixieland Jass Band records the first jazz record, for the Victor Talking Machine Company in New York. |
| 21739 | February 26 | Event | 1919 – President Woodrow Wilson signs an act of the U.S. Congress establishing most of the Grand Canyon as a United States National Park - the Grand Canyon National Park. |
| 21740 | February 26 | Event | 1929 – President Calvin Coolidge signs an Executive Order establishing the 96,000 acre Grand Teton National Park in Wyoming. |
| 21741 | February 26 | Event | 1935 – Adolf Hitler orders the Luftwaffe to be re-formed, violating the provisions of the Treaty of Versailles. |
| 21742 | February 26 | Event | 1935 – Robert Watson-Watt carries out a demonstration near Daventry which leads directly to the development of radar in the United Kingdom. |
| 21743 | February 26 | Event | 1936 – In the February 26 Incident, young Japanese military officers attempt to stage a coup against the government. |
| 21744 | February 26 | Event | 1946 – Finnish observers report the first of many thousands of sightings of ghost rockets. |
| 21745 | February 26 | Event | 1952 – Vincent Massey is sworn in as the first Canadian-born Governor General of Canada. |
| 21746 | February 26 | Event | 1960 – A New York-bound Alitalia airliner crashes into a cemetery in Shannon, Ireland, shortly after takeoff, killing 34 of the 52 persons on board. |
| 21747 | February 26 | Event | 1966 – Apollo program: Launch of AS-201, the first flight of the Saturn IB rocket |
| 21748 | February 26 | Event | 1966 – Vietnam War: The ROK Capital Division of the South Korean Army massacres 380 unarmed civilians in South Vietnam. |
| 21749 | February 26 | Event | 1971 – U.N. Secretary General U Thant signs United Nations proclamation of the vernal equinox as Earth Day. |
| 21750 | February 26 | Event | 1972 – The Buffalo Creek Flood caused by a burst dam kills 125 in West Virginia. |