When does Heartland return?

Heartland is an American sitcom that aired on CBS from March 20, 1989, until June 12, 1989. The series stars Brian Keith as an old-fashioned Nebraska farmer who moves in with his daughter, son-in-law and their family.
B. L. McCutcheon, an old-fashioned farmer, loses his farm and has to move in with his daughter's family in the fictional rural town of Pritchard, Nebraska.