I have incredible trouble with dates. It is like a void in my cognition.
It is easy enough, for the most part, to deal with. I just have to write everything down for future events on specific dates and track recurring events on specific dates. I use preprogrammed reminders in my smart phone to alert me of impending dates of importance. But I couldn’t tell you what my anniversary was, or my sister’s birthday, or anything like that without referencing some document. Even after reading it I will very quickly lose the information…so the referencing of dates has become ritual for me.
But if separated from continual reinforcement (multiple times daily) I inevitably lose track of the date, if not reinforced by some new source of the current date, within several hours I can be off by several days. If not reinforced for a few days, I can lose track of the month...or sometimes even the year.
Like I said, this is for me a void in cognition. But I am fairly good at working around it by simply referencing reminders like computer displays, email, my phone, sometimes calendars etc.
This has gotten me into trouble in the workplace semi-recently. I wrote a date on a form that was incorrect, and almost lost my job. (It's a big no-no in my industry) And I have to try to be extra vigilant because I am especially prone to this sort of mistake.
This is one of the only deficits I have that no amount of cognitive training or personal efforts has made any difference for…and believe you me, I have tried.
Edit;
Ironically, my perception of what time it is, even without reference to any time telling device, is remarkably accurate. I just "know" what time it is...I've never been off by more than a minute or two.