A Scottish Cup semi final at Hampden between these two great rivals is always something to cherish.
It's advantage Celtic in the race for the title while Rangers supporters are believing a place in Europa League Final is on as they gear up for their showdown with RB Leipzig.
But it's all about the famous old Cup this weekend.
Scottish football is rocking right now and so will the national stadium at 2pm on Sunday.
Ange Postecoglou 's debut season in Scottish football has been a roaring success but Gio van Bronckhorst knows his side can rewrite the narrative with a win in Mount Florida.
But will it be a third success on the spin for Celtic or will Rangers reverse the recent trend?
Our Record Sport writers make their predictions for the big one.
Keith Jackson
Rangers head to Hampden on a season high after more European heroics. But after back-to-back Old Firm wins in the league, table-topping Celtic will feel they have an edge over their rivals.
It’s almost impossible to call this one with any kind of certainty, but Celtic’s fresher legs could make the difference in extra time.
Celtic 3 Rangers 2 (aet)
David McCarthy
Celtic are flying and Rangers will be on a high after Europe but they’ve been second best in the last two Old Firm games and Hampden’s wide open spaces will work against tired legs and bodies.
Celtic 2 Rangers 0
GAVIN BERRY
There is less expectation on Rangers after losing on the last two occasions to their rivals and their midweek European exertions, but that could work to their advantage and they can get a win against the odds after extra time.
Celtic 1 Rangers 2 (aet)
Craig Swan
Celtic have got a freshness about them and their relentless running to go with their attacking threat may just prove to be too much for Rangers on the big Hampden pitch.
Celtic 2 Rangers 1
Andy Newport
Rangers will be ramped up after Thursday’s heroics but being forced into extra-time to secure the win will have bottomed out their energy reserves and that may come back to haunt them against a Hoops side fully rested.
Celtic 1 Rangers 0
Michael Gannon
It was a magnificent achievement for Rangers to reach the last four in Europe but it could come at a cost.
It will be tight and tense, but Celtic are rested and have energy to burn, which could make it a difficult afternoon for the weary Gers.
Celtic 1 Rangers 0
Scott Burns
Celtic will be fresher and, boosted by their last derby win, will have too much quality and pace for Rangers in the front areas and that will be the difference.
Celtic 3 Rangers 1
Graeme Young
Celtic are rightly favourites but Rangers' rousing run to the Europa League semi finals shows a team capable of earning season-defining results.
However, Ange Postecoglou's side have run roughshod domestically since September in the quest for a Treble. Rangers will be jolted by their Euro heroics but a second consecutive trip into extra time may prove too much to overcome.
Celtic 3 Rangers 2 (aet)
