NDBC THREDDS Server Catalog https://dods.ndbc.noaa.gov/thredds/catalog/data/stdmet/ctgm1/catalog.html

Dataset Size Last Modified
     Folder  ctgm1   --
         ctgm1.ncml 302.0 bytes 2017-11-15T16:15:19.508Z
         ctgm1h2009.nc 4.069 Mbytes 2009-12-31T23:54:00Z
         ctgm1h2010.nc 4.105 Mbytes 2010-11-11T15:12:00Z

National Data Buoy Center THREDDS Server at National Data Buoy Center see Info
THREDDS Data Server [Version 4.6.14 - 2019-07-23T11:04:31-0600] Documentation