National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model-gfs-004-files/202108/20210828/catalog.html

Dataset Size Last Modified
     Folder  20210828   --
         GFS Grid 4 2021-08-28 18:00 UTC fct:006.grb2 159.8 Mbytes 2021-08-29T08:40:25.147Z
         GFS Grid 4 2021-08-28 18:00 UTC fct:003.grb2 158.4 Mbytes 2021-08-29T08:40:25.051Z
         GFS Grid 4 2021-08-28 18:00 UTC fct:000.grb2 148.3 Mbytes 2021-08-29T08:40:24.704Z
         GFS Grid 4 2021-08-28 12:00 UTC fct:006.grb2 159.9 Mbytes 2021-08-28T20:40:16.039Z
         GFS Grid 4 2021-08-28 12:00 UTC fct:003.grb2 160.0 Mbytes 2021-08-28T20:40:17.445Z
         GFS Grid 4 2021-08-28 12:00 UTC fct:000.grb2 149.6 Mbytes 2021-08-28T20:40:18.150Z
         GFS Grid 4 2021-08-28 06:00 UTC fct:006.grb2 160.2 Mbytes 2021-08-28T20:40:16.375Z
         GFS Grid 4 2021-08-28 06:00 UTC fct:003.grb2 159.9 Mbytes 2021-08-28T20:40:19.053Z
         GFS Grid 4 2021-08-28 06:00 UTC fct:000.grb2 150.2 Mbytes 2021-08-28T20:40:18.251Z
         GFS Grid 4 2021-08-28 00:00 UTC fct:006.grb2 160.9 Mbytes 2021-08-28T08:40:20.275Z
         GFS Grid 4 2021-08-28 00:00 UTC fct:003.grb2 160.3 Mbytes 2021-08-28T08:40:20.822Z
         GFS Grid 4 2021-08-28 00:00 UTC fct:000.grb2 150.3 Mbytes 2021-08-28T08:40:19.904Z

NCEI-NC THREDDS Server at NCEI see Info
Documentation