On October 4th, several events have occurred throughout history, and some events are scheduled to happen in the future. Here are some of the significant events that have happened on October 4th, according to the search results:

• In 1957, the Soviet Union launched Sputnik 1, the first artificial satellite.
• In 1992, the Mozambican Civil War ended after 15 years of conflict.
• Work began on Mount Rushmore in the Black Hills National Forest of South Dakota in 1927.

Additionally, on October 4th, 2023, FEMA will conduct a nationwide emergency test on all electronic devices at 2:20 p.m. ET. The test will assess the nationwide Emergency Alert System as well as Wireless Emergency Alerts.