A method and system for implementing a guaranteed observance window is provided. Specifically, the guaranteed observance window may be implemented in telecommunication. The method may include determining an available message size, determining an observance window, and setting a time slot sensitivity based on the message size and the desired observance window. The method may further include detecting a first event, setting a first bit of a message to a logic high when the first event is detecting, and advancing a location of the first bit within the message with the passage of each time intervals that correspond to the time slot sensitivity.