new delhi the union public service commission upsc has released notice for the candidates to submit choice of centre for the engineering services main examination 2020 and combined geoscientist main examination 2020 the candidates who have applied for upsc engineering services and combined geoscientist examinations are advised to visit the official website of the commission to submit the choice of exam centre the upsc will be conducting the engineering services main examination 2020 and combined geoscientist main examination 2020 on october 18 2020 sunday and october 17 2020 to october 18 2020 saturday sunday respectively all over india as per the revised programme of examinationsrts published on the website of the commission keeping in view of the requests received from the candidates for changing their centre the commission has decided to give an opportunity to them to submit their revised choice of centre the window of submitting the revised choice of centre by the candidates will be operational from 8th 13th september 2020 0600 pm on the commissions website upsconlinenicin however the candidates who are not interested to change their centre are not required to log into the online system of centre change