(a) Except as provided in §§ 503.80 and 503.81 regarding a determination to withhold from public disclosure any information pertaining to a portion or portions of a meeting or portion or portions of a series of meetings, or as otherwise provided in paragraph (c) of this section, the Secretary of the agency shall make public announcement of each meeting of the agency.

(b) Except as otherwise provided in this section, public announcement of each meeting of the agency shall be accomplished not later than one week prior to commencement of a meeting or the commencement of the first meeting in a series of meetings, and shall disclose:

(c) The announcement described in paragraphs (a) and (b) of this section may be accomplished less than one week prior to the commencement of any meeting or series of meetings, provided the agency determines by recorded vote that the agency business requires that any such meeting or series of meetings be held at an earlier date. In the event of such a determination by the agency, public announcement as described in paragraph (b) of this section shall be accomplished at the earliest practicable time.

(d) Immediately following any public announcement accomplished under the provisions of this section, the Secretary of the agency shall submit a notice for publication in the Federal Register disclosing:

(e) No comments or further information relating to a particular item scheduled for an agency meeting will be accepted by the Secretary for consideration subsequent to public announcement of such meeting; except that the Commission, on its own initiative, or pursuant to a written request, may in its discretion, permit a departure from this limitation for exceptional circumstances.