Hii aspirants

let me clear your doubt.

The exam schedule for jee main exam for January session is 6 to 11 january, 2020.

And the exam timing

For 1st shift will be 9:30 AM to 12:30 PM

For 2nd shift will be 2:30 PM to 5:30 PM

But the Entry in Exam Centre

For 1st shift will be 7:30 AM to 8:30 AM

For 2nd shift will be 12:30 PM to 1:30 PM

For more details you can visit the site

https://engineering.careers360.com/articles/jee-main-exam-dates

I hope my answer will be helpful for you

Good luck