Comments on: Geodetic Datums: NAD 27, NAD 83 and WGS84 https://gisgeography.com/geodetic-datums-nad27-nad83-wgs84/ Geographic Information Systems Sat, 29 Mar 2025 18:53:09 +0000 hourly 1 https://wordpress.org/?v=6.8.3 By: Kandi Klover https://gisgeography.com/geodetic-datums-nad27-nad83-wgs84/#comment-329407 Thu, 25 Apr 2024 22:11:08 +0000 http://gisgeography.com/?p=7572#comment-329407 In reply to Fred Roeder.

1 no one cares unless autistic,
2 they’ve mostly all been monumented for coordinates as well now and are regularly used by surveyors for such when setting up RTK base.

]]> By: Phil S. https://gisgeography.com/geodetic-datums-nad27-nad83-wgs84/#comment-293536 Wed, 03 May 2023 16:02:34 +0000 http://gisgeography.com/?p=7572#comment-293536 Okay.
How do I get GAIA OPTIONS:
decimal degrees
degrees, minutes, seconds
degrees, decimal minutes
UTM coordinates
OR
MGRS coordinates
From:
NAD27 coordinates? There is a free GAIA version, if you want to research any of this. Thanks. Phil

]]> By: Cliff Mugnier https://gisgeography.com/geodetic-datums-nad27-nad83-wgs84/#comment-258589 Sun, 30 Jan 2022 18:01:50 +0000 http://gisgeography.com/?p=7572#comment-258589 Clarke 1880 was never used in North America. Bessel 1841 was used before Clarke 1866 was adopted because it was based on observations of triangulation arcs of North America.
Cliff Mugnier

]]> By: James Smith https://gisgeography.com/geodetic-datums-nad27-nad83-wgs84/#comment-27374 Tue, 22 Jan 2019 23:22:02 +0000 http://gisgeography.com/?p=7572#comment-27374 One of the most clear, concise, descriptions I have read. Well done.

]]> By: Fred Roeder https://gisgeography.com/geodetic-datums-nad27-nad83-wgs84/#comment-7741 Tue, 27 Feb 2018 16:32:02 +0000 http://gisgeography.com/?p=7572#comment-7741 The photo shown is a benchmark, not a triangulation station. Benchmarks refer to elevation only and not to geographic position.

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