How to fill in the start-end date and end date of social security card?

The application date and deadline need not be filled in. The social security card has been used, which is the date when the card was first used; If applying for a new card, the start and end date of the social security card is the application date. End date: no need to fill in, as long as the identity information is valid, the social security card can continue to be used. If the card is lost, expired or needs to be updated, you need to fill in the date in the corresponding application and update form.