The last occasion of such behaviour occurred during the century before the caldera's only historical eruption in 1538 (refs 2, 6). (nature.com)
Consider the case in which A represents the last occasion in a daydreaming sequence and B involves an abrupt decision to return to work. (religion-online.org)
In that year, the bishops of East and West gathered at the Second Council of Nicaea: a meeting which, apart from its importance for other reasons, is remembered as the last occasion on which Christian faith, as a lived reality recognized throughout the then - known world, found expression in a universally representative gathering. (religion-online.org)