| 摘要 |
A control device (2) is provided with a setting time determination unit (22) for determining, on the basis of a second real-time clock, a setting time that a first real-time clock of a terminal device (3) is to be set to. The terminal device (3) has a waiting time timing unit (34) for timing the passing of a waiting time that is the waiting time from the time when the setting time is acquired by the terminal device (3) until the first real-time clock is set to the setting time and is calculated in a timing unit having more significant digits than the timing unit of the first real-time clock and a time setting unit (32) for setting the first real-time clock to the setting time when the waiting time has passed. |
