And now it is time for me to stop mentioning it.
Not that it was not a transcendent moment for any City fan. It absolutely was.
But that was fifteen months ago. So much has changed for City and for Aguero since that great day; precious little of the change has been very happy.
Better to turn eyes forward and look for brighter days from Aguero, who, even in what was largely a lost campaign last season, turned in the occasional blinder.
Last year's frustration and difficulty promises to be this season's redemption for Aguero and, if form holds, for his fellow Sky Blues.
Because, when Aguero is on, City are awfully tough to beat.