Have you ever searched for anniversaries to put on the main page of Wikipedia?
Or do you know users who deal with this?
I had a dream to find possible anniversaries with bot and this weekend I did it.
The bot goes through articles and collects data in connection with the given date.
In huwiki editors began to use it in the first minutes. :-)
It is hard to write it generally in a form suitable for all Wikipedias, so I choosed to make localization easy with code and description.