Super Accurate clock for your PC

I found a nifty little program that synchronizes your PC/laptop time with an atomic clock- much better than whats bundled with XP!
Might make satellite observations and the likes a little easier
www.ntp-systems.com/software_download.as...ymmtime_download.asp

fwiw I use nettime.sourceforge.net/
No active development on it now, but it just implements the NTP protocol. Could never get the XP bundled one to work properly with normal NTP servers.

Cheers,
~Al

One question,
I presume that the program gets its time from a website, would it not take a sizable fraction of a second or so to cross the web and get to your computer thus the time is inherently wrong or is it much faster then that???

My underststanding is that it first calculates the delay (via ping??) and then sets the time, compensating for the delay in the process.
Is this correct?

My underststanding is that it first calculates the delay (via ping??) and then sets the time, compensating for the delay in the process.
Is this correct?

www.ietf.org/rfc/rfc1305.txt goes into the full implementation and analysis of NTP. A simpler implementation, the one generally used is described in the Simple NTP RFC at www.ietf.org/rfc/rfc2030.txt

At it's simplest it operates as Michael says, though a separate ping is not sent, this information is included in the query and response. Typically several servers are used to make it more accurate. The above documents go into a lot more detail of the implementation.

Cheers,
~Al

I thought I remembered reading years ago that the exact path of data on the web was almost random and if the same data was sent again, it probabily would take a different path (longer/shorter), is this true?? (I'm no telecoms expert)....