Snehashis there is no fixed time for declaring the result. All the timings shown are just predictive timings by different organizations. It's already 1:30 PM so I recommend you to keep checking for the results in every half an hour, it can be declared anytime today.

How to check the JEE Main Exam result 2018

• Open any one of the official websites - jeemain.nic.in, cbseresults.nic.in or results.nic.in
• One homepage, you will find the link for JEE Main Exam, click on it 
• You will be redirected to the results page
• Enter your registration number/roll number, name and date of birth. Click on submit
• Your result will be displayed online on the screen of your computer/mobile

Feel free to ask if you have any more queries. All the best!!