Don't overlook the obvious. Pay special attention to the document title, document number, and chapter or section titles. Seek out copy that is in small print, where many mistakes tend to cluster. In my experience, nobody who keeps records or files longer than one year is very frequently interested in storing or retrieving them first by month or day. Similarly in disk or tape archives, the big unit you first encounter is most likely to be a year, then a month.
Metric taper handles that quite unambiguously.
Please don't send any attachments or long items without checking with me first. If you have a product or service of interest to editors, I'll be happy to consider including a short advertisement, for a modest fee. Contact me for details. Weber I am a technical editing consultant, working with print and online documents. I intend to produce this newsletter weekly, but I'm making no promises.