I recently changed my name and have the gazette notification for it. Can you tell me how I can update my name on my SSC/HSC certificates and mark sheets? I need to use the name from my SSC certificate for future exam applications.

You can approach a court to obtain a legal order rectifying your date of birth. This order can then be used to change the date on your birth certificate. You will need to provide supporting documents like your Matriculation Certificate to demonstrate the correct date.