The Republic of Ireland have made the short trip to Glasgow to take on old friends Scotland on Saturday evening in the UEFA Nations League, which is live on RTÉ2 and the RTÉ Player.
Here is a look back at some of the more recent meetings.
15 October 1986: Republic of Ireland 0-0 Scotland, UEFA European Championship qualifier
When the Republic of Ireland got their campaign underway to try and qualify for Euro 88, few would have expected Jack Charlton's side to come through a group which contained Belgium and Scotland.
Both sides had qualified for the World Cup in Mexico that summer. Belgium had been beaten by eventual winners, Diego Maradona's Argentina. Scotland had qualified for the three previous World Cups before going on to qualify again in 1990.
So, when the Scots came to Lansdowne Road in Autumn of '86, Ireland carved out a nil all draw which proved to be the bedrock of a successful qualifying campaign.
Frank Stapleton and John Aldridge led the line, Paul McGrath anchored the midfield alongside Liam Brady and Packie Bonner played in goal.
Scotland's Mo Johnston, Gordon Strachan and Paul McStay were kept in check by a back four which included Kevin Moran and Mick McCarthy.
Alan Hansen cleared off the line from a Kevin Sheedy volley after Jim Leighton spilled a Ray Houghton cross but neither side could break the deadlock.
18 February 1987: Scotland 0-1 Republic of Ireland, UEFA European Championship qualifier
When the Republic of Ireland travelled to Hampden Park for the return game, they were yet to pick up a win having drawn with both Belgium and Scotland previously.
Some believe that the 11 names who were chosen to start that night were perhaps the greatest ever to wear the green shirt.
The team read out as: Bonner; McGrath, McCarthy, Moran, Whelan; Houghton, Lawrenson, Brady, Galvin; Aldridge, Stapleton.
The clubs were: Celtic, Manchester United, Manchester City (soon to be Celtic), Manchester United, Liverpool, Oxford United (soon to be Liverpool), Liverpool, Ascoli, Tottenham Hotspur, Liverpool, Manchester United.
Due to an injury crisis in the full-back positions, Paul McGrath and Ronnie Whelan took up those roles.
Just eight minutes into the clash, a long pass was sent towards Frank Stapleton who found himself sandwiched between Alan Hansen and Maurice Malpas.
The Scottish full-back Malpas found himself worse off but the free kick was given to Ireland. John Aldridge took it quickly and rolled it into the path of Mark Lawrenson who rolled the ball into the bottom corner to send the away fans into raptures.
Mick McCarthy cleared off the line from Ally McCoist as Scotland chased an equaliser, but at the other end John Byrne missed a gilt-edged opportunity to double the lead.
Ireland held on for the win, but followed up that positive result in the summer by losing away to Bulgaria in April.
However, Scotland were to do Ireland a favour as Gary Mackay's famous goal for the Tartan Army away to Bulgaria sent Ireland through to their first ever major tournament, Euro '88.
30 May 2000: Republic of Ireland 1-2 Scotland, international friendly
With both sides failing to qualify for that summer's major tournament, Euro 2000, which was being held in Belgium and the Netherlands, Craig Brown took his Scotland side to Lansdowne Road to take on an Ireland side depleted by injury.
The Scots had been beaten by England the previous November in a play-off for the European Championships after Paul Scholes scored twice in Hampden Park - Don Hutchison scored in the return leg at Wembley, but they could not find the equaliser.
In Dublin, Craig Burley deflected a free kick into his own net to give Mick McCarthy's side the lead but Scotland bounced back with goals from Hutchison and Barry Ferguson which were all scored in the first half.
Ferguson scored his first goal for his country playing advanced of Paul Lambert in midfield, as the home side struggled in the absence of the talismanic Roy Keane.
Alan Kelly played in goal while Robbie Keane partnered Niall Quinn up front. It was largely a second-string Irish team which included the likes of Kevin Kilbane, Stephen McPhail, Phil Babb, Steve Finnan, Stephen Carr, Jason McAteer and Gary Breen.
12 February 2003: Scotland 0-2 Republic of Ireland, international friendly
Three years later, it was the same story as both sides once again failed to qualify for a major tournament.
Euro 2004 in Portugal would have no Celtic involvement as the Republic of Ireland, Scotland, Wales and Northern Ireland all missed out.
It was to be Brian Kerr's first match in charge since succeeding Mick McCarthy while Scotland boss Berti Vogts was looking for his first home win as manager, a year into the job.
In the aftermath of Saipan, Matt Holland was given the captain's armband and he partnered Mark Kinsella at the heart of the Irish midfield.
John O'Shea played at centre-half together with Gary Breen, whilst Dean Kiely earned one of his 11 caps in the absence of Shay Given. Clinton Morrison and Gary Doherty were partnered up top.
It was Kevin Kilbane who nodded Ireland in front, glancing his header beyond the clutches of Neil Sullivan after just nine minutes.
Just seven minutes later, Ireland doubled their lead thanks to Morrison who scored his fourth international goal in his tenth international match for Ireland.
Sullivan punched a clearance against Steven Reid's head before the ball bounced into the path of Morrison located on the edge of the box where he had the relatively easy task of volleying it home into an empty net with his left foot.
The game played out as mostly friendlies tend to be, ruined by a litany of substitutions.
The news that shook the nation 20 years ago - Tony O'Donoghue's report on Roy Keane's shock exit from the Republic of Ireland World Cup squad after a row with Mick McCarthy | Read @corktod's first-person account of the #Saipan affair on the @RTESport site and @RTENews app today pic.twitter.com/O4XKDyypFw
— RTÉ Soccer (@RTEsoccer) May 22, 2022
29 May 2011: Republic of Ireland 1-0 Scotland, Carling Nations Cup
Robbie Keane captained the Republic of Ireland to their first trophy success since winning the Icelandic Triangular Tournament in 1986, thanks to a 1-0 win in front of a sparse crowd at the Aviva Stadium.
Keane's 49th international goal gave Giovanni Trapattoni a boost heading into a crucial qualifier for Euro 2012 against Macedonia, which they would go on to win in Skopje 0-2.
Shay Given had denied Phil Bardsley early on before Keane squirmed his effort beyond the clutches of Allan McGregor.
Paul McShane and Stephen Ward flanked Darren O'Dea and Stephen Kelly in the centre of defence, while Seamus Coleman was introduced on the right of midfield as a second-half substitute.
Liam Lawrence, Keith Andrews, Keith Fahey and Stephen Hunt occupied the midfield positions, whist Keane was partnered with Simon Cox up front.
Kenny Miller tested Given's reflexes with an overhead kick as the game time ticked towards the 90, but Ireland held out for their third win in a row in the competition.
James Forrest made his Scotland debut in that game, playing alongside the likes of Liverpool's Charlie Adam and Celtic's Scott Brown.
14 November 2014: Scotland 1-0 Republic of Ireland, UEFA European Championship qualifier
'Paradise' was rocking for this all Celtic clash as Shaun Maloney's winner 15 minutes from time gave Gordon Strachan's side the upper hand in the race to qualify for Euro 2016 in France.
Owing to the Commonwealth Games putting Hampden Park out of commission, Celtic Park was the venue for the meeting of two former Celtic bosses, Gordon Strachan and Martin O'Neill.
However it was Strachan who was victorious, with another former Celtic player, Maloney, curling in the winner.
The game looked to be heading to a boring, scoreless draw but when O'Neill decided to take off Shane Long and put an extra body into midfield, Maloney immediately punished Ireland's conservatism.
Long had started alongside Jonathan Walters in a front two, but was replaced by Robbie Brady and just minutes later, Ireland went behind.
Aiden McGeady had forced a save from David Marshall with a well-struck volley but it was the home side who always looked most likely to score.
Charlie Mulgrew had gone close in the first half before Maloney finally broke the deadlock.
Scotland survived a late scare after Christoph Berra headed onto his own bar as Ireland pushed, but ultimately failed to score an equaliser.
13 June 2015: Republic of Ireland 1-1 Scotland, UEFA European Championship qualifier
The following summer the sides renewed acquaintances once more, this time at the Aviva Stadium in Dublin.
Current squad members included Robbie Brady, who played at left-back, Seamus Coleman played on the opposite flank whilst Jeff Hendrick played in central midfield. James McClean came off the bench.
Again, Shaun Maloney proved to be the thorn in the Irish sides as his deflected effort escaped the grasp of Shay Given and salvaged an important point in the race to qualify for France.
The Republic of Ireland had gone ahead thanks to a goal from Jonathan Walters as he tapped in a rebound from a David Marshall save. Walters had been standing in an offside position but it wasn't picked up by the match officials.
It was no less than the home side deserved as they flew out of the blocks.
James McCarthy was perhaps lucky to escape with just a yellow card after a flying elbow on now Swansea City boss Russell Martin.
Just after half-time the sides were level after Maloney combined with Ikechi Anya before aiming his effort for the far corner where it was inadvertently directed into the net by John O'Shea.
McClean, Walters and Daryl Murphy would all go close but neither side found a winner.
The result put Scotland firmly in the driving seat to at least earn a play-off.
Yet, after a defeat away to Georgia, Ireland took full advantage by defeating then world champions Germany to steal into third place where they would beat Bosnia and Herzegovina in the play-off.
11 June 2022: Republic of Ireland 3-0 Scotland, UEFA Nations League
After two opening defeats to Armenia and Ukraine, the Republic of Ireland's hopes of topping the Nations League group were extinguished even before Scotland arrived in Dublin.
The Scots came into the game off the back of being knocked out by Ukraine in the play-off for the World Cup and the hangover showed as goals from Alan Browne, Troy Parrott and Michael Obafemi put a poor Scottish side to the sword.
Stephen Kenny's side started like a house on fire and were rewarded after Browne bundled in Shane Duffy's header across goal.
Minutes later Obafemi picked out Parrott with a wonderful through ball which took out all the Scottish defenders and the goalkeeper as the Dubliner netted his second senior goal for his country.
In the second half, Obafemi unleashed a rocket from 25 yards which flew past Craig Gordon to send the home fans delirious as Ireland claimed their first win over their near neighbours in 11 years.
🚀 Michael Obafemi has thundered in a stunning third goal for Ireland - his first for the Boys in Green #RTESoccer #IRLSCO #COYBIG #NationsLeague
— RTÉ Soccer (@RTEsoccer) June 11, 2022
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Follow the Republic of Ireland v Scotland this Saturday (kick-off 7.45pm) via our live blog on RTÉ.ie/sport and the RTÉ News app, watch live on RTÉ 2 and the RTÉ Player, or listen to national radio commentary on RTÉ Radio 1
