Advent (n.) is contrasted with 'event', 'advent' is not a datable occurrence, and contrasted with 'structure' it does not leave time behind. It institutes itself as a style. It 'detaches' itself from spatial temporal location by opening a horizon as a promise of events to come.
The Advent (n.) continues to preside over a certain space and time.
The Advent (n.) opens possibilities, even ones it does not itself realize.
The Advent (n.) is unlike the essence, not subject to identical repetition.
The Advent (n.) is unlike the event, not absolutely singular. It is historical, but it overflows its singularity.