Embassies/Consulates can issue your F1 student visa as early as 120 days before the start date on your I-20 form. Students are encouraged to apply for their I-20 early to provide enough time for visa processing. It is recommended that you wait until you receive your Form I-20 before you make an interview appointment at the U.S. embassy or U.S. consulate. Students can enter the U.S. no earlier than 30 days before the study start date shown on your I-20 form.