An aircraft passenger seating unit and aircraft seating arrangements including seating units, each seating unit configured as a window-facing seating unit or as an aisle-facing seating unit. Each individual seating unit including first and second laterally adjacent seats mounted on a common platform and oriented at an angle to a longitudinal aircraft axis. A forwardmost point of each of the first and second seats, when in an upright sitting position, resides along a plane common to both the first and second passenger seats perpendicular to the longitudinal aircraft axis to allow longitudinal alignment of rows and increased seating density.