What will happen if my passport already expire last August and I want?
For Indian passport The process is straightforward if your old passport expired less than 3 years ago. If it longer than that you can apply giving a reference of the old passport number, but this will be treated like a new passport application and may take longer. The lesson is to renew your passport before it expires or preferably within a year of expiry. You are permitted to renew starting from 1 year before expiry.