National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model-gfs-004-files/202008/20200829/catalog.html

Dataset Size Last Modified
     Folder  20200829   --
         GFS Grid 4 2020-08-29 18:00 UTC fct:006.grb2 99.37 Mbytes 2020-08-30T08:40:34.938Z
         GFS Grid 4 2020-08-29 18:00 UTC fct:003.grb2 99.02 Mbytes 2020-08-30T08:40:35.448Z
         GFS Grid 4 2020-08-29 18:00 UTC fct:000.grb2 90.75 Mbytes 2020-08-30T08:40:34.553Z
         GFS Grid 4 2020-08-29 12:00 UTC fct:006.grb2 100.0 Mbytes 2020-08-29T20:40:39.345Z
         GFS Grid 4 2020-08-29 12:00 UTC fct:003.grb2 99.38 Mbytes 2020-08-29T20:40:38.720Z
         GFS Grid 4 2020-08-29 12:00 UTC fct:000.grb2 90.47 Mbytes 2020-08-29T20:40:38.039Z
         GFS Grid 4 2020-08-29 06:00 UTC fct:006.grb2 99.77 Mbytes 2020-08-29T20:40:38.252Z
         GFS Grid 4 2020-08-29 06:00 UTC fct:003.grb2 98.93 Mbytes 2020-08-29T20:40:38.267Z
         GFS Grid 4 2020-08-29 06:00 UTC fct:000.grb2 90.38 Mbytes 2020-08-29T20:40:38.175Z
         GFS Grid 4 2020-08-29 00:00 UTC fct:006.grb2 99.85 Mbytes 2020-08-29T08:40:41.135Z
         GFS Grid 4 2020-08-29 00:00 UTC fct:003.grb2 98.73 Mbytes 2020-08-29T08:40:33.718Z
         GFS Grid 4 2020-08-29 00:00 UTC fct:000.grb2 89.82 Mbytes 2020-08-29T08:40:33.298Z

NCEI-NC THREDDS Server at NCEI see Info
Documentation