National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model-gfs-004-files/202105/20210522/catalog.html

Dataset Size Last Modified
     Folder  20210522   --
         GFS Grid 4 2021-05-22 18:00 UTC fct:006.grb2 163.4 Mbytes 2021-05-23T08:40:31.726Z
         GFS Grid 4 2021-05-22 18:00 UTC fct:003.grb2 162.4 Mbytes 2021-05-23T08:40:32.056Z
         GFS Grid 4 2021-05-22 18:00 UTC fct:000.grb2 152.0 Mbytes 2021-05-23T08:40:31.616Z
         GFS Grid 4 2021-05-22 12:00 UTC fct:006.grb2 163.1 Mbytes 2021-05-22T20:40:20.932Z
         GFS Grid 4 2021-05-22 12:00 UTC fct:003.grb2 163.2 Mbytes 2021-05-22T20:40:21.049Z
         GFS Grid 4 2021-05-22 12:00 UTC fct:000.grb2 152.9 Mbytes 2021-05-22T20:40:20.661Z
         GFS Grid 4 2021-05-22 06:00 UTC fct:006.grb2 163.7 Mbytes 2021-05-22T20:40:23.576Z
         GFS Grid 4 2021-05-22 06:00 UTC fct:003.grb2 163.0 Mbytes 2021-05-22T20:40:23.584Z
         GFS Grid 4 2021-05-22 06:00 UTC fct:000.grb2 152.9 Mbytes 2021-05-22T20:40:24.207Z
         GFS Grid 4 2021-05-22 00:00 UTC fct:006.grb2 163.7 Mbytes 2021-05-22T08:40:27.121Z
         GFS Grid 4 2021-05-22 00:00 UTC fct:003.grb2 162.8 Mbytes 2021-05-22T08:40:30.004Z
         GFS Grid 4 2021-05-22 00:00 UTC fct:000.grb2 152.2 Mbytes 2021-05-22T08:40:44.410Z

NCEI-NC THREDDS Server at NCEI see Info
Documentation