A control system includes a radiation emission apparatus and a radiographic imaging apparatus that generates image data by receiving radiation A first apparatus of the radiation emission apparatus and the radiographic imaging apparatus includes a first timer that performs time measurement to periodically generate first time measurement information. A second apparatus of the radiation emission apparatus and the radiographic imaging apparatus includes a second timer that performs time measurement to periodically generate second time measurement information. The first apparatus includes an interface that transmits the first time measurement information to the second timer. At least one apparatus includes a hardware processor which adjusts the operation of the first or second timer based on adjustment conditions in a state where the second timer does not acquire the first time measurement information.