Abstract: A method for automatically adjusting a time difference for a video instrument is disclosed, which includes a first step for setting and storing a time difference adjusting data, a second step for selecting a corresponding channel in accordance with a key input of a user, a third step for detecting a broadcasting station ID and a time data from the selected channel broadcasting signal, a fourth step for reading a time difference data corresponding to the detected broadcasting station ID from a memory, a fifth step for adding the read time difference adjusting data and the detected time data, a sixth step for performing a time adjusting operation in accordance with the added time data, and a seventh step for performing a time adjusting operation in accordance with the added time data.