The City Intimation Slip is released by the NTA (National Testing Agency) before the JEE Main exam. It contains important details such as your exam city, exam center address, and reporting time, but not your exact date and shift, which are usually mentioned later on the JEE Main admit card. Typically, the City Intimation Slip is released a few weeks before the exam, and candidates are advised to check it carefully to plan their travel and accommodation. The exact JEE Main exam date for each session is announced on the official JEE Main website ( jeemain.nta.nic.in (http://jeemain.nta.nic.in) ).