Wrong hemisphere in geotiffs EPSG code for HLS data
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amigdala999
- Posts: 5
- Joined: Tue Nov 11, 2025 2:24 pm America/New_York
Wrong hemisphere in geotiffs EPSG code for HLS data
Hi,
I wonder if it's a bug.
I'm downloading a tile 50HLG which according to MGRS is in south hemisphere. It's in Australia or near it.
wget -v https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-protected/HLSS30.020/HLS.S30.T50HLG.2025080T021209.v2.0/HLS.S30.T50HLG.2025080T021209.v2.0.B08.tif
The I'm looking in its SRS data with:
gdalsrsinfo HLS.S30.T50HLG.2025080T021209.v2.0.B08.tif
and it outputs:
PROJ.4 : +proj=utm +zone=50 +datum=WGS84 +units=m +no_defs
OGC WKT2:2019 :
PROJCRS["WGS 84 / UTM zone 50N",
<.......>
AREA["Between 114°E and 120°E, northern hemisphere between equator and 84°N, onshore and offshore. Brunei. China. Hong Kong. Indonesia. Malaysia - East Malaysia - Sarawak. Mongolia. Philippines. Russian Federation. Taiwan."],
BBOX[0,114,84,120]],
ID["EPSG",32650]]
It has EPSG 32650 while I would expect 32750 and 50S in this file.
This affects all (at least S30) data in southern hemisphere.
Is this a bug or by design?
I wonder if it's a bug.
I'm downloading a tile 50HLG which according to MGRS is in south hemisphere. It's in Australia or near it.
wget -v https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-protected/HLSS30.020/HLS.S30.T50HLG.2025080T021209.v2.0/HLS.S30.T50HLG.2025080T021209.v2.0.B08.tif
The I'm looking in its SRS data with:
gdalsrsinfo HLS.S30.T50HLG.2025080T021209.v2.0.B08.tif
and it outputs:
PROJ.4 : +proj=utm +zone=50 +datum=WGS84 +units=m +no_defs
OGC WKT2:2019 :
PROJCRS["WGS 84 / UTM zone 50N",
<.......>
AREA["Between 114°E and 120°E, northern hemisphere between equator and 84°N, onshore and offshore. Brunei. China. Hong Kong. Indonesia. Malaysia - East Malaysia - Sarawak. Mongolia. Philippines. Russian Federation. Taiwan."],
BBOX[0,114,84,120]],
ID["EPSG",32650]]
It has EPSG 32650 while I would expect 32750 and 50S in this file.
This affects all (at least S30) data in southern hemisphere.
Is this a bug or by design?
Filters:
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amigdala999
- Posts: 5
- Joined: Tue Nov 11, 2025 2:24 pm America/New_York
Re: Wrong hemisphere in geotiffs EPSG code for HLS data
Additionally tiffinfo prints mismatching details:
$ tiffinfo HLS.S30.T50HLG.2025080T021209.v2.0.B08.tif
....
Tag 34737: UTM Zone 50, Northern Hemisphere|WGS 84|
GDAL Metadata: <GDALMetadata>
...
<Item name="HORIZONTAL_CS_CODE">EPSG:32750</Item>
<Item name="HORIZONTAL_CS_NAME">WGS84 / UTM zone 50S</Item>
....
$ tiffinfo HLS.S30.T50HLG.2025080T021209.v2.0.B08.tif
....
Tag 34737: UTM Zone 50, Northern Hemisphere|WGS 84|
GDAL Metadata: <GDALMetadata>
...
<Item name="HORIZONTAL_CS_CODE">EPSG:32750</Item>
<Item name="HORIZONTAL_CS_NAME">WGS84 / UTM zone 50S</Item>
....
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- Posts: 60
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Re: Wrong hemisphere in geotiffs EPSG code for HLS data
Hello,
Thanks for bringing this to our attention. We are looking into this, and as soon as I have more information, I will let you know.
Brett
Thanks for bringing this to our attention. We are looking into this, and as soon as I have more information, I will let you know.
Brett
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amigdala999
- Posts: 5
- Joined: Tue Nov 11, 2025 2:24 pm America/New_York
Re: Wrong hemisphere in geotiffs EPSG code for HLS data
Hi, any news regarding this?
It seems this could cause 'ERROR: transform: Point outside of projection domain (2050) ' errors when processing such GeoTiffs with latest PostGIS. Im considering to reprojecting all files to SRID 4326
It seems this could cause 'ERROR: transform: Point outside of projection domain (2050) ' errors when processing such GeoTiffs with latest PostGIS. Im considering to reprojecting all files to SRID 4326