v.112 - Update Highlights: An Exocit Adventure Awaits

That was an exception. Usually, when they say a patch is coming on day x, they wait for the end of the day to start patching.

Then that means whatever they say is coming day x isn't actually coming on day x, now is it?
The coming definitions are:

noun
1. approach; arrival; advent: His coming here was a mistake.
adjective
2. following or impending; next; approaching: the coming year.
3. promising future fame or success: a coming actor.

I believe definition 2 works best for this. You wouldn't say, blabla is coming on January 1st and then bring blabla out on January 2nd.

The events end today.
Typically, the day after all the events end is when the next patch arrives not when they bring the down game for maintenance. There is rarely ever a day where there are no events whatsoever.