Meaning of 入って in this sentence


Vernon is complaining about being woken up again by Harry's owl and says:

> 今週に入って三回目だぞ  
>  Third time this week!

What is the meaning (and pronunciation: presumably はいって) of 入って here? I would
have thought 今週に三回目だぞ would have had the same meaning.

I can't make the usual meaning of "to enter" and the like make any sense here.




This is an idiomatic use of 入る: You "enter" into a week (at the beginning of
the week). The beginning of the week is strictly speaking often taken to be
Sunday, but for the purpose of this expression probably most often means
Monday. So X週に入って（から） means earliest Sunday (or Monday) of Week X, but usually
is intended to mean some time (a day, a few hours) after Monday morning,
basically any time that wouldn't fall under "first thing in Week X".

> 来週に入ってからやりましょう  
>  Let's do it some time next week.  
>  _lit._ Let's do it after entering next week.

So,

> 今週に入って三回目だぞ  
>  _lit._ It's the third time after entering this week!




This is an idiomatic use of 入る: You "enter" into a week (at the beginning of
the week). The beginning of the week is strictly speaking often taken to be
Sunday, but for the purpose of this expression probably most often means
Monday. So X週に入って（から） means earliest Sunday (or Monday) of Week X, but usually
is intended to mean some time (a day, a few hours) after Monday morning,
basically any time that wouldn't fall under "first thing in Week X".

> 来週に入ってからやりましょう  
>  Let's do it some time next week.  
>  _lit._ Let's do it after entering next week.

So,

> 今週に入って三回目だぞ  
>  _lit._ It's the third time after entering this week!

