epoch.md

https://gdal.org/en/stable/user/coordinate_epoch.html

ogrinfo /vsicurl/https://github.com/OSGeo/gdal/raw/refs/heads/master/autotest/ogr/data/flatgeobuf/test_ogr_flatgeobuf_coordinate_epoch.fgb foo -so

INFO: Open of `/vsicurl/https://github.com/OSGeo/gdal/raw/refs/heads/master/autotest/ogr/data/flatgeobuf/test_ogr_flatgeobuf_coordinate_epoch.fgb'
      using driver `FlatGeobuf' successful.

Layer name: foo
Geometry: Unknown (any)
Feature Count: 0
Layer SRS WKT:
GEOGCRS["myTRF2021",
    DYNAMIC[
        FRAMEEPOCH[2010]],
    DATUM["myTRF2021",
        ELLIPSOID["GRS 1980",6378137,298.257222101,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[ellipsoidal,2],
        AXIS["geodetic latitude (Lat)",north,
            ORDER[1],
            ANGLEUNIT["degree",0.0174532925199433]],
        AXIS["geodetic longitude (Lon)",east,
            ORDER[2],
            ANGLEUNIT["degree",0.0174532925199433]]]
Coordinate epoch: 2021.3
Data axis to CRS axis mapping: 2,1