time signal

US /ˈtaɪm ˌsɪɡ.nəl/
UK /ˈtaɪm ˌsɪɡ.nəl/
"time signal" picture
1.

時報

an audible signal indicating the exact time, typically broadcast on radio or television

:
The radio station broadcasts a time signal every hour on the hour.
ラジオ局は毎正時に時報を放送します。
My watch is set to the atomic time signal for accuracy.
私の時計は精度を保つために原子時報に設定されています。