National Centers for Environmental Information / National Operational Model Archive and Distribution System Catalog https://www.ncei.noaa.gov/thredds/catalog/model-narr-a-files/199710/19971005/catalog.html

Dataset Size Last Modified
     Folder  19971005   --
         narr-a_221_19971005_2100_000.grb 56.46 Mbytes 2012-08-03T17:56:08.447Z
         narr-a_221_19971005_1800_000.grb 56.50 Mbytes 2012-08-03T17:56:09.493Z
         narr-a_221_19971005_1500_000.grb 56.45 Mbytes 2012-08-03T17:56:11.896Z
         narr-a_221_19971005_1200_000.grb 56.46 Mbytes 2012-08-03T17:56:11.466Z
         narr-a_221_19971005_0900_000.grb 56.67 Mbytes 2012-08-03T17:56:10.056Z
         narr-a_221_19971005_0600_000.grb 56.36 Mbytes 2012-08-03T17:56:10.987Z
         narr-a_221_19971005_0300_000.grb 56.71 Mbytes 2012-08-03T17:56:10.570Z
         narr-a_221_19971005_0000_000.grb 56.37 Mbytes 2012-08-03T17:56:08.970Z

NCEI-NC THREDDS Server at NCEI see Info
Documentation