Puzzle. I do not know the answer.
You can also consider this as a desperate attempt to outsource my query after all search engines failed me.
Okay – for all you English gurus… You know how at the turn of the new year, we often write the wrong year for a few days (the previous year) (e.g. on checks)? There is an actual English word for that. For the life of me I cannot remember it.
What is it?