Like the Senate, the House of Commons meets on Parliament Hill in Ottawa. The Commons Chamber is modestly decorated in green, in contrast with the more lavishly furnished red Senate Chamber. The arrangement is similar to the design of the Chamber of the British House of Commons. The seats are evenly divided between both sides of the Chamber, three sword-lengths apart (about three metres). The Speaker's chair (which can be adjusted for height) is at the north end of the Chamber. In front of it is the Table of the House, on which rests the ceremonial mace. Various "Table Officers"—clerks and other officials—sit at the table, ready to advise the Speaker on procedure when necessary. Members of the Government sit on the benches on the Speaker's right, while members of the Opposition occupy the benches on the Speaker's left. Government ministers sit around the Prime Minister, who is traditionally assigned the 11th seat in the front row on the Speaker's right-hand side. The leader of the Official Opposition sits directly across from the Prime Minister and is surrounded by a Shadow Cabinet or critics for the government portfolios. The remaining party leaders sit in the front rows. Other Members of Parliament who do not hold any kind of special responsibilities are known as "backbenchers". The House usually sits Monday to Friday from late January to mid-June and from mid-September to mid-December according to an established calendar, though it can modify the calendar if additional or fewer sittings are required. During these periods, the House generally rises for one week per month to allow members to work in their constituencies. Sittings of the House are open to the public. Proceedings are broadcast over cable and satellite television and over live streaming video on the Internet by CPAC owned by a consortium of Canadian cable companies. They are also recorded in text form in print and online in Hansard, the official report of parliamentary debates. The "Constitution Act, 1867" establishes a quorum of twenty members (including the member presiding) for the House of Commons. Any member may request a count of the members to ascertain the presence of a quorum; if however, the Speaker feels that at least twenty members are clearly in the Chamber, he or she may deny the request. If a count does occur, and reveals that fewer than twenty members are present, the Speaker orders bells to be rung, so that other members on the parliamentary precincts may come to the Chamber. If, after a second count, a quorum is still not present, the Speaker must adjourn the House until the next sitting day.