Hello,

You didn't mention your stream. But, check the link below you will get syllabus of all the streams here.

https://engineering.careers360.com/exams/gate

Also, GATE2021 will be conducted from 5-7 February,2021 and 12-14 February, 2021. Each day there are two sessions (forenoon session and afternoon session). The time of forenoon session is 9:30 AM to 12:30 PM and the exam time of afternoon session is 3:00 PM to 6:00 PM. You can also check the exams dates from the link given below

https://engineering.careers360.com/articles/gate-important-dates

Good luck!