[whatwg] Dates BCE

Jim O'Donnell jim at eatyourgreens.org.uk
Thu Jul 30 13:34:47 PDT 2009

On 30 Jul 2009, at 17:36, Sam Kuper wrote:

> Suppose you wanted to mash up the Darwin correspondence data with a
> SIMILE Timeline[1], it would help if the correspondence data was
> (more) machine-readable. Now suppose you also wanted to add some diary
> entries[1] to the same timeline, so that you could instantly visualise
> when letters were written vs when diary entries were written. This
> would be much easier if both the two websites from which you were
> sourcing your data used a consistent, machine-readable date format.
> [1]http://www.simile-widgets.org/timeline/
> [2]http://darwin-online.org.uk/content/frameset? 
> itemID=F1925&viewtype=text&pageseq=1

I think Google News Timeline is worth mentioning here as an  
application which already does this
It shows events going back to the late Middle Ages. I'm not sure how  
they've harvested the dates from wikipedia. Perhaps by using  
microformatted dates?

So, yes, I think there is a strong case for using the <time> element  
to standardise publication of historical dates, not just dates in the  
modern period. That would include dates where only the year, or year  
and month, or a range between two years is present.


Jim O'Donnell

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