This Friday, July 31, marks the sombre anniversary - and is the first of which will not be observed by tragic Merle and Billy Eakin, who passed away within weeks of each other in the past 12 months.
Their daughter Kathryn, just nine years old, was the youngest victim of the atrocity.
While the investigation into claims that the alleged role of Catholic priest in the bombings was covered up by the church and the Government has been completed, the finalisation of the public document could take weeks or even months.
Initially set for publication in 2007, the launch was delayed because of 'new information coming to light'.
A spokesman for the Police Ombudsman said he could not provide a publication date for the long-awaited document.
"The investigation has been completed," he said.
"However the office is now compiling the public document, which can be a long and detailed process."
The spokesman said that by law, information including witness statements cannot be revealed to the public.
The investigation was sparked in 2002, when a letter purporting to be from a retired Roman Catholic priest, claimed that the late Father James Chesney had confessed his involvement in the murders in a private conversation.
Addressing survivors and relatives of the dead later that year, Assistant Chief Constable Sam Kincaid announced a review of the police investigation into the bombings.
Meanwhile the Police Ombudsman's office also opened an investigation into claims that the then Prime Minister Willie Whitelaw and Catholic Primate of all Ireland, Cardinal Conway, had been made aware of Chesney's possible involvement.
While he was questioned by Bishop Neil Farren, the matter was not taken further and the priest was moved to a remote parish in Malin, Donegal.
While a number of people were arrested in 2005 and several people have been questioned, no charges have been brought in connection with the bombings.
Claudy resident and unionist community worker William Houston has urged anyone with information on the bombings to come forward to police. He has also slammed the delay of the Ombudsman's report.
"The Ombudsman's office publication of their report into the 1972 RUC investigation of the bombings, which was due to have been issued in November 2007, has been delayed we are told, due to 'new information having been received'. It is unknown when it might see the light of day!" he said.
"Nine people died that day, eight from the village and surrounding area and one from the neighbouring village of Donemana. It rained that Monday afternoon to wash the blood of over forty innocent people away. Whilst the then acting Chief of the IRA in the City of Londonderry now struts the political stage as our Deputy First Minister, nine people lie dead in their graves, killed in Claudy on the day a village died."