JEE Main is the first stage of the IIT JEE entrance exam. It is conducted by NTA (National Testing Agency) twice in a year (January and April) to offer admissions into various government and private colleges depending upon the rank of the candidate. On the other hand, JEE Advanced is the second and final phase of JEE. The exam is conducted by selected IITs on a rotational basis to offer admission in 23 IITs. Candidates who qualify the JEE Main and are in the top ranks can only appear for JEE Advanced.