How much time is "short period of time."?

Hello. I was in the process of finding Timeworn maps for the treasure hunt activity and so far I have only been able to find one with my miner. After reading the notes I found out that they have this legend on them:

"After obtaining a timeworn map, players will be unable to find another for a short period of time."

Does anyone knows how much time is that? also I couldn't find if it was possible to obtain two Timeworn maps of different skins since they are marked as "unique", does anyone knos if you can hold more than one at a time?

Thanks! :D

It was said to be 18 hours in Reinheart's translation. Whether or not one would consider that short is another story. Basically it sounds like something you can do once a day, unless you buy or share maps from other people.