NCOD was inaugurated in 1988 by Robert Eichberg and Jean O'Leary. Eichberg, who died in 1995 of complications from AIDS, was a psychologist from New Mexico and the founder of the personal growth workshop "The Experience". O'Leary was an openly lesbian political leader and long-time activist from New York, and was at the time the head of the National Gay Rights Advocates in Los Angeles. LGBT activists, including Eichberg and O'Leary, did not want to respond defensively to anti-LGBT action because they believed it would be predictable. This led them to establish NCOD in order to maintain positivity and celebrate coming out. The date of October 11 was chosen because it is the anniversary of the 1987 National March on Washington for Lesbian and Gay Rights.