When will jee2021 was conducted or upto what extent the date will be postponed

Jee main January session generally takes place in first and second week of January. But due to this pandemic the situation is not in our hands. So it is really unpredictable if the exam will be postponed or not.
But it is expected that the applications for Jee Main 2021 January session may release in the month of November 2020. As of now there is no such information whether the exam of next year will be postponed. Jee Main January application usually starts in the month of September and April session starts in the month of February. You can start checking the official website, for any kind of updates and if the application releases it will be updated there. There might be a delay in the application of Jee 2021 as most of the events of 2020 have been delayed.