Hello aspirant

Their is no fix time for the certificate generation.it will depend on the process of govt. If you have good links with staff of SDM office or with sdm then it takes less time to generate it but otherwise it takes some time to generate.but no fix time for this.so please visit SDM office for your certificate and request them to make it as early as possible and request to SDM that it is your future so please generate it immediately.i am sure they will definitely helps you.

Also request to college or counseling authority to give you some days to prepare caste certificate.