A "Time Signal" is a standardized signal used to indicate the exact time, often broadcasted through various media such as radio, television, or the internet. These signals help synchronize clocks and devices, ensuring that people and systems operate on the same time reference. Time signals are crucial for activities like navigation, telecommunications, and broadcasting. They are often generated by atomic clocks, which provide highly accurate time measurements. Organizations like the National Institute of Standards and Technology (NIST) in the United States and International Bureau of Weights and Measures (BIPM) globally maintain these time standards.