In the Federal Register notice, a correction has been made to a previous document published on December 21, 2020. The correction changes the date in the DATES section from "January 20, 2021," to "January 21, 2021." This notice pertains to the Federal Communications Commission and was filed on January 12, 2021.
Simple Explanation
In a government document, they fixed a mistake and changed a date from January 20th to January 21st, telling everyone the new correct day to remember.