Hi Ankita

If your question refers to january 2020 session then  entrance test for the January 2020 session was conducted on December 8, 2019.  However,the online registration for jIPMER PG exam started in September 2019. So, you can expect the registration to begin around this month if you are wishing to give exam next year. You will have to keep checking the official website for latest updates and important dates.

For more details click on this link https://medicine.careers360.com/articles/jipmer-pg

Hope this helps