For those who still don't have the main event down clearly enough in their minds, I asked one of the Baker Street Irregulars for some help in gathering the evidence. He tells me (via google) that the last week of May 1947 looked like this.
Sun, 25th; Mon, 26th; Tue, 27th; Wed, 28th;
Thu 29th; Fri 30th; Sat, 31st.
The keen-eared will recall that HH moved in "a few days before" May 30.
Perhaps the Tuesday or Wednesday of that week?
And that on an undated Thursday he actually met Lo for the first time, or Dolores as he called her then, as she was "taking things off a clothesline" and then came over to sit alongside him on the lower step of the rear porch.
All instinct says that the momentous Thursday had to be
May 29 1947, as marked above.
They cannot have lived together in the same house for a whole week, until the
next Thursday, before they met. Neither Lo, nor Humbert, would have allowed that to happen!
So that turned into a Memorial Day to remember for Humbert!
And now we all know!
At least that much,
Peder