An array of aircraft seats, the seats being convertible between a sitting mode and a sleeping mode, the array of seats comprising: • seats arranged for array in two columns along and in rows across an aircraft cabin, the columns being on respective sides of a longitudinal axis of the array: • the seats having respective central axes, • the seats in both columns having their central axes angled with respect to, as opposed to parallel to, the longitudinal axis, wherein: • each column has only one seat in each row, • the array including at least one sextet of the seats having: • three seats from one column and three rows on one side of the longitudinal axis, with • a middle one of these three seats facing inwards towards or outwards from the longitudinal axis and • the other of these three seats facing outwards from or inwards towards the longitudinal axis respectively and • three seats from the other column and the three rows on the other side of the longitudinal axis, with • a middle one of these three seats facing inwards towards the longitudinal axis and • the other of these three seats facing outwards from the longitudinal axis, • the seats in the or each sextet of seats are arranged in pairs of adjacent seats: • each pair of adjacent seats having one seat from one column on one side of the longitudinal axis and the other seat from the other column on the other side of the longitudinal axis, • the pairs of seats facing in opposite directions along the longitudinal axis: • the seats of one pair facing inwards towards the longitudinal axis and • the seats of the next pair along the longitudinal axis facing outwards from the longitudinal axis, • the pairs of seats are separated by a longitudinal divider along the longitudinal axis. • seats arranged for array in two columns along and in rows across an aircraft cabin, the columns being on respective sides of a longitudinal axis of the array: • the seats having respective central axes, • the seats in both columns having their central axes angled with respect to, as opposed to parallel to, the longitudinal axis, • each column has only one seat in each row, • the array including at least one sextet of the seats having: • three seats from one column and three rows on one side of the longitudinal axis, with • a middle one of these three seats facing inwards towards or outwards from the longitudinal axis and • the other of these three seats facing outwards from or inwards towards the longitudinal axis respectively and • three seats from the other column and the three rows on the other side of the longitudinal axis, with • a middle one of these three seats facing inwards towards the longitudinal axis and • the other of these three seats facing outwards from the longitudinal axis, • three seats from one column and three rows on one side of the longitudinal axis, with • a middle one of these three seats facing inwards towards or outwards from the longitudinal axis and • the other of these three seats facing outwards from or inwards towards the longitudinal axis respectively and • a middle one of these three seats facing inwards towards or outwards from the longitudinal axis and • the other of these three seats facing outwards from or inwards towards the longitudinal axis respectively and • three seats from the other column and the three rows on the other side of the longitudinal axis, with • a middle one of these three seats facing inwards towards the longitudinal axis and • the other of these three seats facing outwards from the longitudinal axis, • a middle one of these three seats facing inwards towards the longitudinal axis and • the other of these three seats facing outwards from the longitudinal axis, • the seats in the or each sextet of seats are arranged in pairs of adjacent seats: • each pair of adjacent seats having one seat from one column on one side of the longitudinal axis and the other seat from the other column on the other side of the longitudinal axis, • the pairs of seats facing in opposite directions along the longitudinal axis: • the seats of one pair facing inwards towards the longitudinal axis and • the seats of the next pair along the longitudinal axis facing outwards from the longitudinal axis, • the pairs of seats are separated by a longitudinal divider along the longitudinal axis. • each pair of adjacent seats having one seat from one column on one side of the longitudinal axis and the other seat from the other column on the other side of the longitudinal axis, • the pairs of seats facing in opposite directions along the longitudinal axis: • the seats of one pair facing inwards towards the longitudinal axis and • the seats of the next pair along the longitudinal axis facing outwards from the longitudinal axis, • the pairs of seats are separated by a longitudinal divider along the longitudinal axis. • the seats of one pair facing inwards towards the longitudinal axis and • the seats of the next pair along the longitudinal axis facing outwards from the longitudinal axis, • the pairs of seats are separated by a longitudinal divider along the longitudinal axis.