National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model-gfs-004-files/202101/20210118/catalog.html

Dataset Size Last Modified
     Folder  20210118   --
         GFS Grid 4 2021-01-18 18:00 UTC fct:006.grb2 98.42 Mbytes 2021-01-19T09:40:44.323Z
         GFS Grid 4 2021-01-18 18:00 UTC fct:003.grb2 97.38 Mbytes 2021-01-18T21:40:50.049Z
         GFS Grid 4 2021-01-18 18:00 UTC fct:000.grb2 89.00 Mbytes 2021-01-18T21:40:49.747Z
         GFS Grid 4 2021-01-18 12:00 UTC fct:006.grb2 98.20 Mbytes 2021-01-18T21:40:50.317Z
         GFS Grid 4 2021-01-18 12:00 UTC fct:003.grb2 98.05 Mbytes 2021-01-18T21:40:44.403Z
         GFS Grid 4 2021-01-18 12:00 UTC fct:000.grb2 89.52 Mbytes 2021-01-18T21:40:50.149Z
         GFS Grid 4 2021-01-18 06:00 UTC fct:006.grb2 98.26 Mbytes 2021-01-18T09:40:42.157Z
         GFS Grid 4 2021-01-18 06:00 UTC fct:003.grb2 97.61 Mbytes 2021-01-18T09:41:06.562Z
         GFS Grid 4 2021-01-18 06:00 UTC fct:000.grb2 89.58 Mbytes 2021-01-18T09:41:03.134Z
         GFS Grid 4 2021-01-18 00:00 UTC fct:006.grb2 99.09 Mbytes 2021-01-18T09:40:40.935Z
         GFS Grid 4 2021-01-18 00:00 UTC fct:003.grb2 97.87 Mbytes 2021-01-18T09:40:42.119Z
         GFS Grid 4 2021-01-18 00:00 UTC fct:000.grb2 89.27 Mbytes 2021-01-18T09:40:41.741Z

NCEI-NC THREDDS Server at NCEI see Info
Documentation