Recently, the network implemented a date range specification as part of the "Ninja Search Options". From the linked post, here's an extract on the implementation:
This is now implemented, here are some examples:
created:2012
(created between 2012-01-01 and 2012-12-31)created:2012-04
(created between 2012-04-01 and 2012-04-30)created:2012-04-05
(created on 2012-04-05, 24 hr UTC range)The above date formats can be applied to a range as well with
..
, like this:
created:2012..2012
(created between 2012-01-01 and 2012-12-31)created:2012-03..2012-04
(created between 2012-03-01 and 2012-04-30)created:2012-01-05..2012-01-10
(you get the idea)Those are for when a question is created. For the last time it was active (same as the active tab) you can use
lastactive:
the same way ascreated:
above.
So, you could find the specific question you remember seeing last and visit it using the link:
httphttps://tex.stackexchange.com/q/<number>
Then, identify the date of that question and perform a search based on that creation date. This will list posts in newest-to-oldest form (technically not what you're after). Here's how to search for questions tagged amsmath between Jan 2, 2013 and Mar 1, 2013search for questions tagged amsmath between Jan 2, 2013 and Mar 1, 2013:
is:question [amsmath] created:2013-01-02..2013-03-01