National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model-gfs-004-files/202006/20200615/catalog.html

Dataset Size Last Modified
     Folder  20200615   --
         GFS Grid 4 2020-06-15 18:00 UTC fct:006.grb2 101.4 Mbytes 2020-06-16T08:40:30.311Z
         GFS Grid 4 2020-06-15 18:00 UTC fct:003.grb2 100.5 Mbytes 2020-06-16T08:40:30.239Z
         GFS Grid 4 2020-06-15 18:00 UTC fct:000.grb2 92.31 Mbytes 2020-06-16T08:40:30.117Z
         GFS Grid 4 2020-06-15 12:00 UTC fct:006.grb2 101.7 Mbytes 2020-06-15T20:42:06.821Z
         GFS Grid 4 2020-06-15 12:00 UTC fct:003.grb2 100.6 Mbytes 2020-06-15T20:42:04.771Z
         GFS Grid 4 2020-06-15 12:00 UTC fct:000.grb2 92.19 Mbytes 2020-06-15T20:42:06.503Z
         GFS Grid 4 2020-06-15 06:00 UTC fct:006.grb2 101.3 Mbytes 2020-06-15T20:42:06.831Z
         GFS Grid 4 2020-06-15 06:00 UTC fct:003.grb2 100.5 Mbytes 2020-06-15T20:42:07.779Z
         GFS Grid 4 2020-06-15 06:00 UTC fct:000.grb2 92.53 Mbytes 2020-06-15T20:42:06.455Z
         GFS Grid 4 2020-06-15 00:00 UTC fct:006.grb2 101.7 Mbytes 2020-06-15T08:40:31.969Z
         GFS Grid 4 2020-06-15 00:00 UTC fct:003.grb2 100.6 Mbytes 2020-06-15T08:40:31.927Z
         GFS Grid 4 2020-06-15 00:00 UTC fct:000.grb2 91.90 Mbytes 2020-06-15T08:40:32.052Z

NCEI-NC THREDDS Server at NCEI see Info
Documentation