This is pretty nice flash clock that you can run on your desktop that will show a number of Vana'diel items, Time, Guild opening/closing, airship, ferry and much much more.
Webmaster can also, easily integrate it into there web sites (though you should check the copy write notice first)
The clock is the work of X-Large Treasures not me, I am just sharing the info I found and used.
Windows Version Download
Mac Version Download
Remember this calculates current Vana'diel times by using your PC's local time (so make sure its set correctly)