我早在7月20日就对RD是寄件还是收件日期有疑惑，请先了解一下我当时的困惑，7月20日我的原帖在此：
肯定是8月17日为截止日，但问题在于：究竟是寄出截止日还是
七月份移民局的更正通知原文摘录如下：
USCIS Announces Revised Processing Procedures for
Adjustment of Status Applications
WASHINGTON—U.S. Citizenship and Immigration Services (USCIS) announced that,
beginning immediately, it will accept employment-based applications to adjust status (Form I-
485) filed by aliens whose priority dates are current under the July Visa Bulletin, No. 107.
USCIS
will accept applications filed not later than August 17, 2007.
我连托福还没敢去考，所以请高手们帮忙翻译最后一句，到底filed not later than 的准确含义是什么？
除了MPOS和我家，
到底还有没有其他人的寄件日被当作RECEIVED DATE？