An air conditioning apparatus including a storage unit that stores therein a setting table in which a schedule of an air conditioning operation for a given period is set, and a control unit that executes operation control according to the schedule in the setting table, characterized in that the air conditioning apparatus comprises: a remote controller that sets operation information of target time slots (A, B) as parts of the given periods; a temporary storage unit that temporarily stores therein the set operation information of the target time slots (A, B); and a turning -on/off timer of an event-registration type that is capable of registering starts and ends of air conditioning operations of the target time slots (A, B) as events via the remote controller and setting a) start times of the events, wherein the start time of each of the events and an operation behavior at the start time of each of the events are registered to set the operation information, and when the operation information of at least one of the target time slots (A, B) is stored in the temporary storage unit, the control unit executes operation control based on the operation information of the target time slot stored in the temporary storage unit in priority to the schedule in the setting table at each time of the start time; or b) a duration of each of the events as the target time slot, wherein the duration of each of the events and an operation behavior within the duration are registered to set the target time slot and an operation behavior in the target time slot, when the operation information of the target time slots is stored in the temporary storage unit, the control unit executes operation control based on the operation information of the target time slot stored in the temporary storage unit in priority to the schedule in the setting table for the duration from a time point where the duration is registered. a remote controller that sets operation information of target time slots (A, B) as parts of the given periods; a temporary storage unit that temporarily stores therein the set operation information of the target time slots (A, B); and a turning -on/off timer of an event-registration type that is capable of registering starts and ends of air conditioning operations of the target time slots (A, B) as events via the remote controller and setting a) start times of the events, wherein the start time of each of the events and an operation behavior at the start time of each of the events are registered to set the operation information, and when the operation information of at least one of the target time slots (A, B) is stored in the temporary storage unit, the control unit executes operation control based on the operation information of the target time slot stored in the temporary storage unit in priority to the schedule in the setting table at each time of the start time; or b) a duration of each of the events as the target time slot, wherein the duration of each of the events and an operation behavior within the duration are registered to set the target time slot and an operation behavior in the target time slot, when the operation information of the target time slots is stored in the temporary storage unit, the control unit executes operation control based on the operation information of the target time slot stored in the temporary storage unit in priority to the schedule in the setting table for the duration from a time point where the duration is registered. a) start times of the events, wherein the start time of each of the events and an operation behavior at the start time of each of the events are registered to set the operation information, and when the operation information of at least one of the target time slots (A, B) is stored in the temporary storage unit, the control unit executes operation control based on the operation information of the target time slot stored in the temporary storage unit in priority to the schedule in the setting table at each time of the start time; or b) a duration of each of the events as the target time slot, wherein the duration of each of the events and an operation behavior within the duration are registered to set the target time slot and an operation behavior in the target time slot, when the operation information of the target time slots is stored in the temporary storage unit, the control unit executes operation control based on the operation information of the target time slot stored in the temporary storage unit in priority to the schedule in the setting table for the duration from a time point where the duration is registered.