A decade is such a comforting packet of time - so metric, so metronomic; it passes on, no matter what the everyday messes and triumphs. A decade since this.
And a half decade? It's equally neat: half done, half left before you can draw line through it. You can draw a line through this. A neat diagonal. It ties the year up efficiently.A half-decade since that.
July is both this and that. A half-decade? A whole decade? Really?