The time at a location within a time zone. Noon local time occurs when the Sun crosses the meridian of that location. Local Apparent Noon occurs when the Sun crosses the observer's meridian. Not much used in modern times. Occasionally, historical times are found which are expressed in "Sundial Time", and it becomes necessary to convert such measurements into Local Civil Time. Local Apparent Time (LAT) can be determined from Local Civil Time (LCT) and the Equation of Time.