Memorable Dates

It's really annoying when you have to choose a 'memorable date' and the only options are in the 20th and 21st centuries.   I don't find those centuries particularly Memorable (as opposed to memorable, which is quite different) and I can never remember dates to the day of the month anyway, because I long ago decided that trying to remember and work out in my head which dates were from the Gregorian calendar, and which Julian calendar, and where the two swapped in various parts of the world was far to much work, so I always say gaily 'In June' or even better 'In the late spring of  1486'. That is Close Enough for Jazz, particularly when the person recording the date probably wrote it down wrong anyway.  

It's bad enough that you are never allowed to choose a date before 1000 because the systems always expect 4 digits.