Control device, control method, and recording medium

A control device controls a plurality of light emitting devices, and includes: a controller that: collects device information from the light emitting devices that are repeatedly turned on and off in a lighting pattern, wherein a turn-on period and a turn-off period are defined within a cycle in the lighting pattern; determines an arrangement order of the light emitting devices based on the device information; calculates a start time at which each of the light emitting devices starts repetition of the lighting pattern using the arrangement order; and transmits lighting information including the start time to each of the light emitting devices and causes each of the light emitting devices to start the repetition of the lighting pattern.