Last modified: 2013-09-30 09:55:33 UTC
An edit such as https://en.wikipedia.org/wiki/User_talk:Jimbo_Wales?diff=468988397 whose timestamp is 2012-01-01T20:35:50 should be present in one of these two pages, but currently isn't: https://en.wikipedia.org/wiki/Special:Contributions/Jimbo_Wales?limit=3&offset=20120101203550 https://en.wikipedia.org/wiki/Special:Contributions/Jimbo_Wales?limit=3&offset=20120101203550&dir=prev Compare with the API, where setting the "ucend" parameter still returns the edit with that exact timestamp: https://en.wikipedia.org/w/api.php?action=query&list=usercontribs&uclimit=3&ucstart=2012-01-01T20%3A35%3A50Z&ucuser=Jimbo%20Wales&ucprop=timestamp The problem is not exclusive to [[Special:Contributions]] (I first noticed it at [[pt:Special:AbuseLog]])
A similar example: if we are at https://pt.wikipedia.org/wiki/Special:Abuselog?offset=20130928143640&limit=3 there are two logs whose timestamp is "2013-09-28T14:29:18", and if we click on "older 3", we get https://pt.wikipedia.org/wiki/Special:Abuselog?offset=20130928142918&limit=3 where the first log is from "2013-09-28T14:28:44". On the other hand, https://pt.wikipedia.org/wiki/Special:Abuselog?offset=20130928143330&limit=10 shows three logs from "2013-09-28T14:29:18", and the last one of them is not present in any of the other links above.
