June 6
June 6 is the 157th day of the year (158th in leap years) in the Gregorian calendar, with 208 days remaining until the year's end.It is most prominently associated with the Allied invasion of Normandy on June 6, 1944—designated D-Day—which commenced Operation Overlord, the largest seaborne military operation ever undertaken, involving over 156,000 troops from the United States, United Kingdom, Canada, and other Allied nations landing across five beaches in northern France to establish a Western Front against Nazi Germany.[1][2]
This operation, planned under Supreme Allied Commander Dwight D. Eisenhower, overcame severe weather delays, intense German defenses, and logistical challenges including airborne drops and naval bombardments, resulting in approximately 10,000 Allied casualties on the first day alone while securing a critical beachhead that facilitated the liberation of Western Europe by May 1945.[3][4]
Other notable events on June 6 include the 1816 eruption of Mount Tambora, a volcanic event that contributed to the "Year Without a Summer" through global cooling effects, and the 1933 opening of the first drive-in theater in Camden, New Jersey, which pioneered outdoor cinema viewing.[5][6]