Context_1 : The ABC Sunday Night Movie is a television program that aired on Sunday nights, first for a brief time in 1962 under the title "Hollywood Special" (although "Time" magazine lists this version as "The Sunday Night Movie") to supposedly replace an open time slot for a cancelled TV show, "Bus Stop", which was cancelled after March 1962. It then began airing regularly under its more commonly known title from late 1964 to 1998, on ABC. Since 2004, it has aired sporadically as a special program, now titled the "ABC Sunday Movie of the Week", though as of the 2011-12 television season, the only films in this timeslot were aired under the "Hallmark Hall of Fame" banner, which transferred to ABC in that season. However, in 2014, The Hallmark Hall of Fame moved exclusively to cable on the Hallmark Channel, and as a result, said program is no longer on broadcast television in any form (including ABC) for good. As a result of this, the Sunday Night Movie is now exclusively relegated to 2 special holiday movies, "The Sound of Music" every holiday season and "The Ten Commandments" every Easter. Context_2 : The Northern Bombing Group consisted of United States Navy and United States Marine Corps squadrons conducting strategic bombing of German U-boat bases along the Belgian coast during World War I. The first United States military unit sent to Europe was the First Aeronautic Detachment of seven naval officers and 122 enlisted men who arrived in France on 5 June 1917. These men became the nucleus of the United States Naval Forces in Europe. They formulated a strategic bombing plan approved by the Secretary of the Navy on 30 April 1918, but chronic difficulties in obtaining aircraft prevented establishment of an effective bombing campaign before the war ended six months later. Context_3 : Negros Occidental High School is a public secondary educational institution in Bacolod City in the province of Negros Occidental, in the Philippines. The school currently offers various curriculum: Special Program in Science Technology, Engineering and Mathematics (STEM) for the Special Science Class, Basic Education Curriculum for the Regular Class, Special Program for the Arts, Special Class in Culture and Sports and the Basic Education Curriculum for the Night Class. Context_4 : Zhou Bing (simplified Chinese: 周兵; pinyin: Zhōu Bing , Zhoubing ; born 1 April 1968), famous Chinese documentary director, a PhD from History College of Nankai University, have successively served as the column scenarist and special program production manager of the program titled with “Oriental Biography” and director of special program division of CND Film Group. Zhou Bing was titled with annual director of Chinese documentary film for three times, and the documentary films created and produced by him amounts to 100 hundred units. His masterpieces including Palace, Dun Huang and "Road of Millenia Bodhi were" aired on CCTV, National Geographic, SKY TV, History Channel, Arte, and NDR. Currently he establishes Beijing Oriental Elites Culture Development Co Ltd and works with Tiong Hiew King, the datuk of Tan Sri, Malaysia to setup Sun Media International Co. Ltd and Zero Media International Co. Ltd. Zhou Bing attempted to join in the development of industrialization process of documentary films with the identity of independent directors. Zhou Bing is also a Adjunct Professor in the Department of Media and Communication of City University of Hong Kong. It is art dream of Mr Zhou who has been desiring to realize through images to broadcast Chinese culture and to build oriental aesthetic approach with the images recognized by the world. Context_5 : The Roll on the Red Tour was a concert tour by American rock band Red Hot Chili Peppers. The tour followed the band's hugely successful "By the Way tour". During this tour the band recorded their first live album, Live in Hyde Park. Near the tour's end, the dates mainly consisted of benefit and tribute shows including the Bridge School Benefit and a tribute show to longtime friend, Johnny Ramone. The band's performance was released two years later on DVD as "Too Tough to Die: A Tribute to Johnny Ramone". Ramone, who was too sick to attend the tribute (although show host, Rob Zombie called him during the event), would pass away a three days after the tribute show. John Frusciante was among many famous friends and family to attend his funeral and memorial celebration. On March 17, 2015, the band released "" a free MP3 download of the entire show through their website. Context_6 : The 1973 Old Bailey bombing was a car bomb attack carried out by the Provisional IRA (PIRA) which took place outside the Old Bailey Courthouse on 8 March 1973. The attack was carried out by a 10-person ASU from the Provisional IRA Belfast Brigade. The unit also exploded a second bomb which went off outside the Ministry of Agriculture in London on the same day at around the same time the bomb at the Old Bailey bomb went off. This was the Provisional IRA's first major attack on mainland Britain since The Troubles began back in 1969. One British civilian died of a heart attack attributed to the bombing, estimates of the injured range from 180 - 220. Two additional bombs were found and defused. Nine people from Belfast were convicted six months later for the bombing, and one acquitted for providing information to the police. Context_7 : The Residential Drug Abuse Program (RDAP) is an intensive nine-month, 500-hour substance abuse rehabilitation program administered by the United States Federal Bureau of Prisons (BOP), offered to federal prisoners who qualify and voluntarily elect to enroll. Upon successful completion of the program, prisoners who meet the necessary criteria are eligible for up to a 12-month reduction of their sentence and possibly six months in a halfway house depending on how many months they have left on their sentence. Due to the high demand and insufficient spots, inmates are placed on a waiting list typically when they have 12 months or less time left on their sentence and are accepted when there is an opening. This is part of the reason why inmates receive different amounts of time off their sentences. For example, if an inmate has waited for a slot until he has 12 months left and the program is six months long, then he only receives six months off his sentence and so forth. Michael Vick was rumored to have entered the program while serving out his sentence at the United States Penitentiary, Leavenworth, Kansas. Context_8 : The Late Late Tribute Shows are a series of special editions of the world's longest-running chat show, "The Late Late Show" broadcast on RTÉ One in Ireland each Friday evening. Over decades the shows has featured a broad range of well-known public figures including Micheál Mac Liammóir, Joe Dolan, Maureen Potter, Michael O'Hehir, Brian Lenihan, Jimmy Magee, Christy Moore, Mike Murphy and Paul McGrath. In 1999, there was a special programme marking six months since the Omagh bombing and there was also a special show in the wake of 9/11. There were also tribute shows celebrating Irish music and a "Late Late Show" special devoted to Irish comedians. Individual bands and musicians to have been given a tribute show include The Clancy Brothers and Tommy Makem, The Chieftains, The Dubliners, U2, Westlife and, most recently, Ronnie Drew himself. Context_9 : Baybay National High School is a public High School located at 30 de Deciembre St., Zone 12, Baybay City, Leyte. It is considered as the biggest High School in the whole city in terms of land area and population. Also, it is the first Public High School established in Baybay City in the year 1945. At present, it has a population of over 4,000 students, with 26 sections for Grade 7, 23 sections Grade 8, 21 sections in the Grade 9 and 17 sections in Grade 10. It has three curricula, namely: Engineering and Science Education Program, Special Program in the Arts, Special Program for Sports and Basic Education Curriculum. Context_10 : The Omagh bombing was a car bombing that took place on 15 August 1998 in Omagh, County Tyrone, Northern Ireland. It was carried out by a group calling themselves the Real Irish Republican Army, a Provisional Irish Republican Army (IRA) splinter group who opposed the IRA's ceasefire and the Good Friday Agreement. The bombing killed 29 people (including a woman pregnant with twins) as well as injuring some 220 others, a death toll even higher than that of any single incident during what were considered 'the Troubles' (1968-10 April 1998). Telephoned warnings had been sent about 40 minutes beforehand, but were claimed to be inaccurate and police had inadvertently moved people towards the bomb. fact_1 :  In 1999, there was a special programme marking six months since the Omagh bombing and there was also a special show in the wake of 9/11. fact_2 : The Omagh bombing was a car bombing that took place on 15 August 1998 in Omagh, County Tyrone, Northern Ireland. Answer: 15 August 1998
Output: When did the bombing event that was marked in a special program of The Late Late Tribute Shows six months later occur?