This doesn't really work yet in the UI. Basically, you could only enter sth like 6th c. BC which in this case would not be correct.
1st Millenium BC would be possible and correct, but it is a bit too wide. That's the only thing supported right now.
We will be working on improving this situation.

Cheers,
Denny

 


2013/8/22 Mathieu Stumpf <psychoslave@culture-libre.org>
Hello,

I'm beginning with wikidata and didn't find how to add a date which is not exact. In fact I found [1], which would gain clarity with an example, but the given format is refused when I try to use it. For example, I want to add birth and death date for Pittacus of Mytilene[2], for which I know no accurate value, but it something like -650 to -570, with something like a quarter century accuracy. Actually, looking at the English Wikipedia, -640 to -568 is given, but without sources unfortunatly. Well, for the sake of the example lets ignore that, what input should I provide to the birth day property to match my previous description?

[1] https://meta.wikimedia.org/wiki/Wikidata/Data_model#Dates_and_times
[2] https://www.wikidata.org/wiki/Q311835

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