Oslo accords negotiations conclude:
The negotiations for the Oslo Accords were concluded at the Fafo Institute in Oslo. The agreement was between Israel and the Palestine Liberation Organization.

The Iran-Iraq War comes to an end after 7 years:
The deadly conventional war between the two Middle Eastern countries began when Iraq invaded Iran on September 22, 1980.

Viking 1 is launched by NASA using a Titan launch vehicle:
It became the first space probe to successfully land on Mars.