[quote=@Gowi]
So given that this is still the Sengoku period and we're having Ryukyu be a relevant force, then I assume our current year is somewhere between 1589 [i]and [/i]1603. Any definite thoughts on that?
[/quote]

Good Question you are a little bit off but not much it is about 1569-1570 about 10 years before Oda Nobunaga unifies japan and all that fun stuff because we want the fighting to still be hot and rampant. So Ryukyu is still a tributary of just the Chinese and not the Japanese at this point. But still one of the most major trading centers in that area of Asia.