/// <summary> 
 /// Initializes a new instance of the <see cref="SpaceTimeInformation">SpaceTimeInformation</see> class. 
 /// <param name="location">The specific location that is occupied at this moment</param>
 /// <param name="pointInTime">A specific time that this location refers to</param>
 /// </summary>
 public SpaceTimeInformation(GeographicLocation location, DateTime pointInTime)
 {
     PhysicalLocation = location;
     PointInTime      = pointInTime;
 }
 /// <summary> 
 /// Initializes a new instance of the <see cref="SpaceTimeInformation">SpaceTimeInformation</see> class. 
 /// <param name="location">The specific location that is occupied at this moment</param>
 /// </summary>
 public SpaceTimeInformation(GeographicLocation location)
 {
     PhysicalLocation = location;
     PointInTime      = new DateTimeProvider().UtcNow;
 }