
In an Agnes Baker or a Lola Hayes deck, the Astronomical atlas can inform you that your weakness is on the top of your deck, which allows you to use Yaotl to discard it from the top of your deck.
Not good enough to include Astronomical atlas if you had planned to use Yaotl, but a good reason to include Yaotl if you had already planned to use the Atlas.
Of course the best solution (to eliminate weaknesses) is Scroll of Secrets (3): look at the bottom 3 cards and discard the weakness among the 3 cards if any. And combined with Astronomical atlas you can even eliminate 2 weaknesses among the 3 cards if necessary (but only Lola and alternate Daisy can have both cards I think).