Yes. Tiddlywiki supports arbitrary fields, and has one by default called 'created' that stores the creation time. It also has a filter mechanism that is central

Yes. Tiddlywiki supports arbitrary fields, and has one by default called 'created' that stores the creation time. It also has a filter mechanism that is central to how it presents information. Filters can be modified to block or pass tiddlers with a certain age. If you want this by default, you can inject these filters into the view template to modify the default presentation of all tiddlers.