Peter Newman
Firstly thanks for fixing so many of my notes, sorry I've not had time to get to them yet.

I've added the D to the others I noted and you'd fixed (but not this one) in https://www.openstreetmap.org/changeset/112623801

My understanding is it should be added, it's how it's now referenced on the ground and I think it means they've changed the collection times to standardise them or something.