Pay cabler HBO will premiere a documentary on the history of “Don't Ask, Don't Tell” at the moment of its demise.

The military policy that bans gay and bisexual troops from serving openly ends on September 20. HBO will premiere The Strange History of “Don't Ask, Don't Tell” on September 19 at midnight.

“[A]t the moment the repeal of 'Don't Ask, Don't Tell' (DADT) goes into effect, HBO will tell the strange-but-true tale of the U.S. Military's ban on gays and lesbians from its implementation, through passionate protests and debates, and finally to its 2011 repeal,” the network said in a press release for the documentary.

The film is directed by Emmy winners Fenton Bailey and Randy Barbato, the filmmaking team behind The Eyes of Tammy Faye and Heidi Fleiss: The Would-be madam of Crystal.

Featured in the documentary are openly gay Massachusetts Rep. Barney Frank, Connecticut Senator Joe Lieberman, former Pennsylvania Rep. Patrick Murphy and Servicemembers Legal Defense Network (SLDN) Executive Director Aubrey Sarvis.