Astronomical Facts provides technical investigation support service to detectives and investigators for any issues concerning the times of rising, setting or position of the Sun or Moon, the times of twilight and issues concerning natural lighting. A FREE SERVICE FOR LAW ENFORCEMENT ORGANIZATIONS. I will reply to E-mail requests from any federal, state, or municipal law enforcement organizations (Official E-mail addresses only). Astronomical Facts can assist you in getting the correct information for the specific date, time and location of the scene. What can ASTRONOMICAL FACTS do? 1. Present a clear explanation, to detectives and investigators, of the significance of the astronomical data as it applies to the natural lighting conditions. 2. Calculate the times of the various periods of Twilight for a specific date and location within the United States. (How light or how dark was it? Could the witness actually see details?) 3. Calculate the precise position of the Sun or Moon for a specific date, time and location to assist in accident or crime scene reconstruction. Contact  Information