Hi Wayne,
The link you posted is for DXY - US Dollar Index.
The page doesn't update when the markets are closed. There is a notation on the page "markets closed". I think DXY updates all the time.
If interested, see if you can get the symbol DXY on your E-signal data stream, or charts. Then you can see whats going on anytime your data stream is functioning.
I normally use Dx when trading currencies. It normally leads by just a touch and if you watch the bid/ask you can get a feel for where it is likely to go. Gives you a few seconds to jump ship, or hold off, depending what you are doing.
Lee