en.wikipedia.org/wiki/Romanian_revolution

This date is incorrect.

The Romanian Communist Party’s 14th Congress ran from 20 to 24 November 1989. Contemporary reporting from the Los Angeles Times states that Ceaușescu "was reelected today" on 24 November 1989. A CVCE historical archive entry likewise says that on 24 November 1989 Nicolae Ceaușescu "est réélu à l'unanimité" (was unanimously re-elected) as general secretary at the end of the 14th Congress.

So 20 November 1989 was the opening day of the congress, not the day of Ceaușescu’s re-election.

The chronology here is wrong.

The National Salvation Front (FSN) had already become the new ruling body before the Ceaușescus were executed. A U.S. State Department report on Romania for 1989 says Ceaușescu "was overthrown on December 22" and that the National Salvation Front "took power" then; it separately states that Nicolae and Elena Ceaușescu "were executed on December 25." AGERPRES likewise states that the FSN "was set up on the evening of December 22, 1989, as the new state power body."

So the article's wording incorrectly suggests that the FSN only came to power after the execution. In fact, the FSN was already in power for roughly three days by the time the Ceaușescus were executed on 25 December 1989.