May 1983

Sunday 01:

Edwin El Chapo Rosario wins boxing's vacant WBC world Lightweight title by beating Jose Luis Ramirez in San Juan, by points in 12 rounds, becoming Puerto Rico's 14th world boxing champion. A young Julio Cesar Chavez also wins as part of the undercard.

Tuesday 17:

Lebanon, Israel, and the United States sign an agreement on Israeli withdrawal from Lebanon.

Friday 20:

First publications of the discovery of the virus that causes AIDS in the journal Science by Luc Montagnierhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=6189183&query_hl=65 and Robert Gallohttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=6601823&query_hl=62 individually.