National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model-gfs-004-files/202104/20210413/catalog.html

Dataset Size Last Modified
     Folder  20210413   --
         GFS Grid 4 2021-04-13 18:00 UTC fct:006.grb2 160.6 Mbytes 2021-04-14T08:40:34.614Z
         GFS Grid 4 2021-04-13 18:00 UTC fct:003.grb2 159.7 Mbytes 2021-04-14T08:40:34.486Z
         GFS Grid 4 2021-04-13 18:00 UTC fct:000.grb2 148.3 Mbytes 2021-04-14T08:40:32.870Z
         GFS Grid 4 2021-04-13 12:00 UTC fct:006.grb2 160.1 Mbytes 2021-04-13T20:40:34.869Z
         GFS Grid 4 2021-04-13 12:00 UTC fct:003.grb2 160.8 Mbytes 2021-04-13T20:40:45.778Z
         GFS Grid 4 2021-04-13 12:00 UTC fct:000.grb2 150.4 Mbytes 2021-04-13T20:40:41.227Z
         GFS Grid 4 2021-04-13 06:00 UTC fct:006.grb2 161.5 Mbytes 2021-04-13T20:40:46.027Z
         GFS Grid 4 2021-04-13 06:00 UTC fct:003.grb2 160.8 Mbytes 2021-04-13T20:40:41.280Z
         GFS Grid 4 2021-04-13 06:00 UTC fct:000.grb2 151.2 Mbytes 2021-04-13T20:40:40.924Z
         GFS Grid 4 2021-04-13 00:00 UTC fct:006.grb2 162.5 Mbytes 2021-04-13T08:40:38.088Z
         GFS Grid 4 2021-04-13 00:00 UTC fct:003.grb2 161.0 Mbytes 2021-04-13T08:40:38.249Z
         GFS Grid 4 2021-04-13 00:00 UTC fct:000.grb2 150.1 Mbytes 2021-04-13T08:40:38.532Z

NCEI-NC THREDDS Server at NCEI see Info
Documentation