1. Get an affidavit executed before the 1st Class Judicial Magistrate affirming your actual date of birth mentioning that the date of birth mentioned in all your documents are incorrect which are required to me corrected by the authorities and your date of birth shall be considered as the D.O.B. mentioned in the instant affidavit.

2. Based on this affidavit, you can get the D.O.B. of all your documents corrected. and issued afresh.

1. There is no template or format for drafting legal documents.

2. All documents are unique in nature and shall have to be drafted exclusively.

3. Get your required document drafted by your selected lawyer after providing him all the required facts and also his fees.

If the passport authorities are  instructing you to furnish birth certificate, you may have to first approach the Municipality with an application to issue the same.

If the municipal authorities express that there are no records available in their register about the particulars/details of your birth then you get a non availability certificate and then apply for a direction in a private case before the jurisdictional judicial magistrate court , to direct the Municipal authorities to register your birth in their register as per the details you have furnished relying upon substantial documentary evidences in your possession, produced before court.

After this process is completed you may approach the municipal authorities with the court order and obtain the birth certificate accordingly.

After that you can apply for re-issue of passport with correct date of birth as per the birth certificate by enclosing a copy of the birth certificate.

The mere affidavit from you will not be entertained by the passport authorities in the situation you are now.

Further you may approach an advocate in the local who would help you to prepare the affidavit or the case before the judicial magistrate court  for this purpose.

You should state your corrected dob based upon your school leaving certificate. 

An affidavit should be filed before the RPO. It should be specifically mentioned that why did you state the previous dob and on what document is the present dob based upon.

An affidavit cannot be shared on this platform.

You can in reply mention that your school leaving certificate reflects actual date of birth 

on basis of school leaving certificate your Aadhar card has been duly corrected 

you can apply for birth certificate in muncipal corporation 

Affidavit should mention that actual date of birth is x date 

that date of birth is wrongly mentioned in passport 

that school leaving certificate records your correct date of birth 

that date of birth in your passport be changed to reflect actual date of birth as per school leaving certificate 

Following is the procedure under Births and Death Registration Act for obtaining birth certificate …

1. Apply to municipal authority as per the date of your actual birth. Municipal authority will give a certificate that no such birth is registered on that date.
2. Submit an application to the Executive Magistrate/Tahsildar for direction to municipal authority for birth certificate  on the said date with following  .
3. A notarized affidavit stating that you birth took place at home on the said date and the same is not registered.
4. No birth registered certificate issued by municipal 
5. Notarized affidavit of mother and father stating that you birth took place on that date and it is not registered.
6. Executive Magistrate/Tahsildar will give direction to municipal authority for issuing birth certificate.
7. Take that direction to municipal authority and apply for birth certificate  on said date.
8. You will get required birth certificate on payment of Rs. 50/- fee to municipal 
9. All the above process can be done from abroad through GPA issued of relative attested by Indian Consulate

I, _______ S/o _____, resident of _____, do hereby solemnly affirm and declare as under :-

1- That the deponent is the resident of the above said address.
2- That the date of birth of the deponent is _____ (____).
3- That the date of birth of the deponent is wrongly mentioned in the office record as ____.
4- That the deponent wants to get corrected his date of birth in the office as _____ instead of ____.

VERIFICATION :

Verified that the contents of my above affidavit are true to best of my knowledge and belief and nothing concealed therein.
Verified at ____ on _____

- If you not having a birth certificate , then you can apply for getting the same after furnishing the address proof of your parents and yours before the birth registrar 

- This address proof should be from the place of your birth and from the period of your birth date .

- However, as you having your school leaving certificate , then after submitting the same you can also corrected in passport after moving an application for the same.