As per the notification released by UPSC, “Candidates who wish to apply under EWS category are requested to get their EWS Certificate ready by 1st August 2019.”
The candidates who have completed the PART I application form are advised to now complete the PART II application form immediately to avoid last minute hurry.
The last date to apply for the UPSC Civil Services Prelim examination is March 18, 2019. The UPSC will conduct the Civil Services preliminary examination on June 2, 2019, at various test centres across the country.
The UPSC Civil Services 2019 Main exam is scheduled to begin from September 20, 2019.
Here’s the official notification link for EWS quota candidates.