A Time of
default will get the data from the start of the most recent forecast, which may be in the future or in the past, depending upon when the forecast was run.
See the Tidetech WMTS Capabilities Time Dimension documentation for information about the convention used in our capabilities document.
The WMTS tiles are served from multiple subdomains, as listed in the GetCapabilities document. This allows web clients to work around a limitation in browsers, which limit the number of concurrent connections to a single domain to some small number. By serving tiles on multiple domains, the web client can speedily fetch a full screen of tiles without hitting the browsers limit on concurrent requests. Non-web based clients without this limitation can request tiles from a single domain, or all domains, as they choose.