The date for a business letter is typed 2 inches below the top of the letter. The position of the date is either left-justified or centered in the middle of the page.
If the sender's address is placed into the body of the letter instead of in the letterhead, then the date is placed one line below where the address is listed at the top of the letter. For U.S. business correspondence, the format of the date is the month, followed by the day and ending in the year. The date written on the letter refers to when the letter is completed, not when the writer began writing it.