Wednesday, January 6, 2021: The Senate and House meet jointly to open and count certificates of electoral votes from the 50 states and the District of Columbia, in alphabetical order. The process is spelled out in great detail in the U.S. Legal Code, right down to the Jan 6 date and the hour (1pm) at which the joint session begins. The candidate who reaches 270 electoral votes is the winner. During the session, at which VP Pence will preside, any member may object to the results from any individual state.
Source: Right Side Broadcasting Network