Selecting an OPT Begin Date 14 June 2016 Administrator OPT Students The "begin date" is that date when the consent for your work commences. It is not possible for you to do work before the begin date, but it is feasible for you to commence the work later. Your applied begin date ought to be inside 60 days following the date of your program fulfillment. For instance, in case you have completed graduation or have completed your replacement program on 21st May, your begin date cannot be after 20th July. Making alteration of the applied dates of OPT, later than making the application which is communicated to USCIS, can be extremely hard. Hence, you need to select your dates meticulously.