- tycho.usno.navy.mil/what.html
- USNO Master Clock Animated GIF Clocks These GIF animations use server push to send the time out in synchronization with the USNO Master Clock. They require a web browser that fully implements this technique. Please note that the time displays available from this page will not work for all browsers. The most accurate way to use the internet to get USNO time is via NTP. CLICK ONCE OR TWICE on the ...tycho.usno.navy.mil/what1.html