Hello,

UP PCS(J) is conducted every year. It was started at 1937. As it is conducted every year then it will be around 7 time conducted between 1990-1997.

You can check more details the official webpage. You can also read the aritcle:- https://law.careers360.com/articles/indian-judicial-services-examination-what-and-how-prepare

If you are preparing for the exam then you will get all the information you want.

Hope it helps!