CHAHINKAPA ZOO OPENS FOR THE SEASON APRIL 23RD! HOURS ARE 10 AM TO 4 PM THROUGH MAY 13TH. STARTING MAY 14TH THROUGH LABOR DAY OPEN 10 AM TO 7 PM. www.chahinkapaz00.0org or 701-642-8709. CHAHINKAPA ZOO OPENS FOR THE SEASON APRIL 23RD! HOURS ARE 10 AM TO 4 PM THROUGH MAY 13TH. STARTING MAY 14TH THROUGH LABOR DAY OPEN 10 AM TO 7 PM. www.chahinkapaz00.0org or 701-642-8709.