Initial TDS Installation Catalog http://esrl.noaa.gov/gsd/thredds/catalog/retro/hrrr/conus/wrftwo/2016/04/21/catalog.html

Dataset Size Last Modified
     Folder  21   --
         20160421.zip 74.42 Mbytes 2017-02-22T23:01:31Z

GSD TDS at ESRL/GSD/ITS/DSG see Info
Documentation