Gregorian calendar is introduced in parts of Europe
Catholic countries begin adopting the Gregorian calendar reform, reshaping civil timekeeping in much of the world.
Discover 3 historical moments on October 4 — 3 events, 0 birthdays, and 0 notable deaths spanning centuries of human history.
Hero image inspired by: Sputnik 1
Catholic countries begin adopting the Gregorian calendar reform, reshaping civil timekeeping in much of the world.
The Soviet Union launches Sputnik 1, the first artificial satellite, beginning the Space Age.
Fighting in Mogadishu, Somalia, results in heavy casualties and becomes one of the defining military incidents of the 1990s.
No births recorded for October 4.
No deaths recorded for October 4.
October 4 is home to 3 recorded historical entries in our collection, including 3 notable events, 0 famous birthdays, and 0 deaths. This date has witnessed momentous occasions spanning from 1582 to the present day.
Among the most notable events on October 4: Gregorian calendar is introduced in parts of Europe (1582), Sputnik 1 is launched (1957), Battle of Mogadishu shocks global audiences (1993). View all events →
Browse what happened on October 3 or October 5, explore the full month of October, or discover a random historical fact.
Guess the year this event occurred.
Join thousands of history buffs. Get a curated 1-minute read of the day's most fascinating historical events sent straight to your inbox.
No spam. Unsubscribe at any time. Read our Privacy Policy.