NDBC THREDDS Server Catalog https://dods.ndbc.noaa.gov/thredds/catalog/data/stdmet/41021/catalog.html

Dataset Size Last Modified
     Folder  41021   --
         41021.ncml 302.0 bytes 2017-11-15T16:15:18.859Z
         41021h1994.nc 93.88 Kbytes 1994-09-08T10:00:00Z
         41021h1995.nc 292.9 Kbytes 1995-12-09T12:00:00Z
         41021h1996.nc 357.4 Kbytes 1996-11-16T23:00:00Z

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