Timeworn maps

[StouterTaru]

I'm confused, I thought you could only find 1 map every 18 hours (if you actually gather it and not skip to get higher tier).

The 18 hour timer is from when you gather one, until you can gather the next one. You decipher one into a key item, have one on each retainer, and one in your inventory, so you can personally have 4 peisteskin maps at a single time. Did a run of 4 of these earlier today, myself as blm with a healer and a tank, took about half an hour and was easy.