What is the word?

There is a word for everything, and if there isn’t then the English language is quite happy to go and steal one from somewhere else (hello, schadenfreude).

So maybe someone can tell me what the word if for when, all of a sudden, everything seems to happen at once, like all the strands of your life conspire to make the coming weeks frantic.

It’s not coincidence as these things don’t necessarily occupy the same space and time, and they aren’t accidental they are all planned, but they do seem to fall into one block of time.

September will be a busy one and before it has even started it is showing no sign of slowing down.

So, all you smartypants out there, what IS the word for when this happens?