An operation terminal in a lighting system includes: a storage which stores identification information of each of the plurality of lighting controllers; a communication circuit which performs wireless communication with the plurality of lighting controllers; and a terminal controller which transmits schedule information for each of the plurality of lighting devices to the plurality of lighting controllers via the communication circuit. The terminal controller obtains the identification information of a current lighting controller currently connected to the operation terminal from the current lighting controller via the communication circuit. The terminal controller then confirms, based on the identification information, that the identification information of the current lighting controller is identical to the identification information of the target lighting controller to which the schedule information for a target lighting device is to be transmitted, and then transmits the schedule information for the target lighting device to the current lighting controller.