When a guild is created
not indefinitly.
You can see in the roster history the moment the creator joined the guild (which is the moment the guild is created), but it will dissapear after a certain amount of people joining/leaving/any other thing creating an entry in the roster history. It will also not display an exact date, but more like 3 months ago – or even 2 years ago.
Arise, ye farmers of all nations
Arise, opressed of Tyria!
Arise, opressed of Tyria!