; and (3) the tabulations of population required by subsection (c) of such section 141 shall be completed by the Secretary as expeditiously as possible after the decennial census date of April 1, 2020, taking into account the deadlines of each State for legislative apportionment or districting, and reported to the Governor of the State involved and to the officers or public bodies having responsibility for legislative apportionment or districting of that State, except that the tabulations of population of each State requesting a tabulation plan, and basic tabulations of population of each other State, shall be completed, reported, and transmitted to each respective State not later than 16 months after the decennial census date of April 1, 2020. 3. 2020 census operations For the 2020 decennial census of population, the Bureau of the Census may not conclude the Nonresponse Followup operation or the Self-Response operation before October 31, 2020.