日本 にっぽん経緯 けいい 原点 げんてんだったら
nipponkeiido gentendattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 日本経緯度原点

1. If it were the origin of Japanese longitude and latitude.; If it's the origin of Japanese longitude and latitude.

Tara Conditional