What Is the duration of copyright in literally weeks? ?

The duration of copyright varies depending on the country and type of work. In general, copyright lasts for the life of the author plus a certain number of years after their death. In many countries, including the United States, the duration is typically 70 years after the author's death. However, it is important to note that copyright laws can be complex and subject to change, so it is always best to consult the specific laws of your country for accurate information.