The effective date of a course certification is specified in the USATF Rules of Competition as follows:
Effective date: Certification is effective as of the date that all measurements and necessary adjustments are submitted as evidenced by the postmark, although the actual review and approval of the certification may be at a later date.
In interpreting this rule, the term “postmark” date is interpreted as referring to a verifiable transmission date, which may include a date of email transmission.
It is also necessary to distinguish between cases where the course measurer is or is not a “certifier,” i.e., a person with authority to write certificates of course certification.
Note that in all cases, the effective date should not be later than the date of the certifier’s signature.