급) perm (LC) 승인되자마자 opt 만료되면 미국에서 얼마간 더 지낼수있나요?…

You are allowed a 60-day grace period following your OPT expiration date to leave the United States, change your status, or transfer your F-1 to a new school or program. In some cases, you may want to pursue these options before the end of your OPT.