Making `time` Safe for Historians →
Extensive research by Peter-Paul Koch on the complications with HTML5’s draft spec for the time element on the subject of historical dates.
Of course, HTML5 actually has a solution for this: don’t. They are very specific about time not being available for pre-Gregorian dates, but ppk’s proposal is interesting nonetheless, and I believe it is well worth considering adding the calendar attribute to time, and being somewhat flexible about the input. The problem with flexible input is of course that people misuse it.
