The North American Datum of 1983 (NAD 83) is the horizontal and geometric control datum for the United States, Canada, Mexico, and Central America. NAD 83 was released in 1986.Can I change the default UTM zone for NAD83?
You may change the default UTM zone. The change is processed interactively once a lat-long is converted; DO NOT click the Submit button. Mapping of NAD83 realizations to HARN and FBNHow do I convert from NAD27 to NAD83?
1. Conversions between NAD27 and NAD83. This converts between NAD27 and NAD83 (1986) using the NADCON transformation. Newer realizations of NAD83, such as NAD83 (CORS96) and NAD83 (2011) can differ from NAD83 (1986) by a meter or so. This conversion uses the Esri transformation NAD_1927_To_NAD_1983_NADCON.What is the difference between NAD83 and WGS84?
NAD83(1986) is the original realization of NAD83, which is practically identical to the original WGS84. The difference between the current realization of WGS84 used by GPS and the original realization of WGS84 typically is on the order of 1 meter.