When circumstances allow us to provide a reasonable estimate of the delivery date for your order, then that date will be shown in the top-right of the order form.
Such a date reflects our best estimate of the date by which new orders will be delivered if the records in question are stored at the National Archives in Washington D.C.  For an estimated delivery for records that must be obtained from other repositories (like NARA in St. Louis, MO), please contact us.
Any such published date is an estimate, of course, and unforeseen circumstances may interfere.  In most cases, however, we are able to delivery orders well before the estimated delivery date.