Usually used as the secular counterpart of a Religion, a 2,200-year civilisation runs from the mid-point of the preceding Religious era to the mid-point of the next. It does not necessarily correspond to any conventionally recognised cultural label, such as Minoan civilisation or even classical civilisation. Yeats's Classical Civilisation runs from around 1000BCE to around 1000CE, with the Monotheistic Religious Period, focused on the Christian Dispensation, starting at its mid-point, giving way to the Civilisation which this enabled around the year 1000CE (see AV B 203-04). These two historical cycles, therefore, have the same length but are ‘syncopated', the Civilisation corresponding to a Lunar month and the Religion to a Solar month. Yeats also sometimes uses it for periods of one-thousand-odd years, referring for instance to a period corresponding to 1000CE-2100CE as ‘our Gothic civilisation' ( AV B 255).