Unix Timestamp: 641779200
Friday, May 4. 1990, 12:00:00 AM UTC

May 6–13 – Pope John Paul II visits Mexico.

Cold War: Estonia restores the formal name of the country, the Republic of Estonia, as well as the state emblems (the coat of arms, the flag and the anthem).

Cold War: Latvia declares independence from the Soviet Union.

Rafael Ángel Calderón Fournier assumes office as President of Costa Rica.