As soon as the birth of a baby takes place,his date of birth is recorded in the office of municipality in case of a town or in case of village, it is recorded by village chowkidar. The same may be utilised for the purpose of proof for the correction of date of birth.
The other option is to approach the rotary magistrate of your area with the proof of a birth certificate issued either municipality office or by chowkidar of the village. You have to submit an application along with date of birth certificate before the lawyer so as to expedite the same.
You would be issued a corrected certificate from the office of rotary magistrate in due course. The same has to be circulated in a local news paper for wide publicity. Then the Board - office has to be contacted along with the recommendation of the Principal of your school for the correction to be made in the Matriculation - certificate. Lastly, you would get a duplicate certificate indicating correct entry of your date of birth.