Thanks for the reply. That certainly places a lot of limits on what can and cannot be done.
Calvin On Thu, Apr 29, 2021 at 2:18 PM Even Rouault <[email protected]> wrote: > > > but the question I have is whether a vector layer were saved to > > something like a GPKG would the timezone even be preserved? > > Short answer: not by default > > Longer answer: > > - see https://github.com/opengeospatial/geopackage/issues/530 > > - and https://github.com/OSGeo/gdal/issues/3423#issuecomment-772405674 > > - and https://gdal.org/drivers/vector/gpkg.html#dataset-creation-options > > So basically: > > - the GeoPackage spec only supports date/time encoded as ISO 8601 with > Zulu timezone : "YYYY-MM-DDTHH:MM:SS.SSSZ" > > - on reading side, the OGR Geopackage driver can understand non-Zulu > timezones > > - on writing side, by default the OGR Geopackage driver will convert > datetimes to the Zulu timezone (applying the appropriate shift), unless > the DATETIME_FORMAT=WITH_TZ dataset creation option is passed at > creation time, in which case the original timezone is preserved. Such > datasets may not be read correctly by third party implementations. > > Even > > > http://www.spatialys.com > My software is free, but my time generally not. > >
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