Question: The 1994 Shankill Road killings took place on 16 June 1994, the Loughinisland massacre, is believed to have been a further retaliation, it took place on which date, in the small village of Loughinisland, County Down, Northern Ireland? 

Context articles: Loughinisland Churches
1994 Shankill Road killings
Annadorn Dolmen
Chlorane Bar attack
Shankill Road bombing
Trevor King
Loughinisland massacre
1971 Balmoral Furniture Company bombing
Khairlanji massacre
Andrew Robb and David McIlwaine killings

The Loughinisland Churches are the remains of three ruined churches in Loughinisland, County Down, Northern Ireland, dating from the 13th to the 17th centuries.
 They are situated in Tievenadarragh townland, in a large graveyard on an island in Loughinisland Lake, now reached by a causeway.
 The churches are state-care historic monuments at grid ref: J4234 4537.
The 1994 Shankill Road killings took place on 16 June 1994.
 The Irish National Liberation Army (INLA) shot dead three Ulster Volunteer Force (UVF) members – high-ranking member Trevor King, Colin Craig and David Hamilton – on the Shankill Road in Belfast, close to the UVF HQ.The following day, the UVF launched two 'retaliatory' attacks.
 In the first, UVF members shot dead a Catholic civilian taxi driver in Carrickfergus.
 In the second, they shot dead two Protestant civilians in Newtownabbey, whom they believed were Catholics.
 The Loughinisland massacre, two days later, is believed to have been a further retaliation.
Annadorn Dolmen is a dolmen sited at the Buck's Head near Loughinisland, in the townland of Annadorn.
 Nearby you can find the old Annadorn school and post office in County Down, Northern Ireland.
 It is on the north-east shore of Loughinisland Lake, on a hillock overlooking Loughinisland Churches, a group of three ruined churches.
 The site is a State Care Historic Monument at grid ref: J4289 4591.
 Co-ordinates: Latitude: 54° 20' 29.97" N Longitude: 5° 48' 8.72" W
The Chlorane Bar attack was a mass shooting at a city centre pub on 5 June 1976 in Belfast, Northern Ireland.
 It was carried out by the Ulster Volunteer Force (UVF), an Ulster loyalist paramilitary organisation, apparently in retaliation for the Provisional IRA bombing attack on the Times Bar on York Road, in which two Protestant civilians were killed.
 In the Chlorane attack, five men were killed; three Catholics and two Protestants.
 The gunmen were from the UVF Belfast Brigade's Shankill Road battalion.
 The assault was a joint operation by the platoons based at the Brown Bear and the Windsor Bar, drinking haunts in the Shankill Road district frequented by UVF members.
The Shankill Road bombing was an operation carried out by the Provisional Irish Republican Army (IRA) on 23 October 1993 and is one of the most notorious incidents of the Troubles in Northern Ireland.
 The IRA's intention was to assassinate the loyalist Ulster Defense Association leadership, who were to be meeting in a room above Frizzell's fish shop on Shankill Road, Belfast.
 Two IRA members were to enter the shop disguised as deliverymen, then force the customers out at gunpoint and plant a time bomb with a short fuse.
 However, when the IRA members entered the shop with the bomb, it exploded prematurely.
 One of the IRA members was killed along with a UDA member and eight Protestant civilians.
 More than fifty people were wounded.
 Unbeknownst to the IRA, the meeting had been rescheduled.
Trevor James King, also known as "Kingso" (c. 1953 – 9 July 1994), was a British Ulster loyalist and a senior member of the Ulster Volunteer Force (UVF).
 He was commander of the UVF's "B" Company, 1st Belfast Battalion, holding the rank of lieutenant colonel.
 On 16 June 1994, he was one of three UVF men gunned down by the Irish National Liberation Army as he stood on the corner of Spier's Place and the Shankill Road in West Belfast, close to the UVF headquarters.
 His companion Colin Craig was killed on the spot, and David Hamilton, who was seriously wounded, died the next day in hospital.
 King was also badly injured; he lived for three weeks on a life-support machine before making the decision himself to turn it off.
The Loughinisland massacre took place on 18 June 1994 in the small village of Loughinisland, County Down, Northern Ireland.
 Members of the Ulster Volunteer Force (UVF), a loyalist paramilitary group, burst into a pub with assault rifles and fired on the customers, killing six civilians and wounding five.
 The pub was targeted because it was frequented mainly by Catholics, and was crowded with people watching the Republic of Ireland team playing in the 1994 FIFA World Cup.
 It is thus sometimes called the World Cup massacre.
 The attack was claimed as retaliation for the killing of three UVF members by the Irish National Liberation Army (INLA).
The Balmoral Furniture Company bombing was a paramilitary attack that took place on 11 December 1971 in Belfast, Northern Ireland.
 A bomb exploded without warning outside a furniture showroom on the Shankill Road in a predominantly unionist area, killing four civilians, two of them babies.
 It is widely believed that the bombing was carried out by members of the Provisional Irish Republican Army (IRA) in retaliation for the bombing of McGurk's pub a week earlier, which killed 15 Catholic civilians.
 The Ulster Volunteer Force (UVF) had carried out that bombing.
The Kherlanji massacre (or Khairlanji massacre) refers to the 2006 murders of Dalits by members of the politically dominant Kunbi caste.
 The killings took place in a small village in India named Kherlanji, located in the Bhandara district of the state of Maharashtra.
The Tandragee killings took place in the early hours of Saturday 19 February 2000 on an isolated country road outside Tandragee, County Armagh, Northern Ireland.
 Two young Protestant men, Andrew Robb and David McIlwaine, were beaten and repeatedly stabbed to death in what was part of a Loyalist feud between the loyalist Ulster Volunteer Force (UVF) and their rivals, the breakaway Loyalist Volunteer Force (LVF).
 The men were not members of any loyalist paramilitary organisation.
 It later emerged in court hearings that Robb had made disparaging remarks about the killing of UVF Mid-Ulster Brigade leader Richard Jameson by an LVF gunman the previous month.
 This had angered the killers, themselves members of the Mid-Ulster UVF, and in retaliation they had lured the two men to the remote lane on the outskirts of town, where they killed and mutilated them.