Enrollments mailed to SSA may have a 7-day tolerance applied to them if the date of
filing is material, the postmark is illegible or missing (or the envelope is missing
or destroyed), and it originated in the continental United States (other than Alaska).
That is, if an enrollment is received during the first 7 days of the month following
the end of an enrollment period (or month - where the month of enrollment is significant),
it will be presumed, in the absence of any evidence to the contrary, that the enrollment
request was mailed before the end of the enrollment period (or month).
Where the postmark is illegible or missing, and the enrollment request originated
in Alaska, Hawaii, Puerto Rico, the Virgin Islands, Guam, American Samoa, or the Northern
Mariana Islands, the mailing date is determined on a case-by-case basis.