The calendar used by the Bajoran people differed from that of Earth. (Bait and Switch: "From Bajor to the Black, Part I", "To Absent Friends", "A Changed World"; The War of the Masters: "Remembrance of the Fallen", "The Only Way to Go") Bajor canonically has a 26-hour local day. (Star Trek: Deep Space Nine) It is likely the length of its solar year is similar but not identical to Earth's, given that both planets orbit in the habitable zones of a G2V-class star.