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#1 |
"TRF" Member
Join Date: Dec 2009
Real Name: Jason
Location: Wales
Watch: SS Sub Date 'V'
Posts: 199
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Where is the Webs most accurate time?
Hi, I did search this forum before I posted this thread but could not find the answer.
Does anyone out there know of a web site that has a very accurate clock. I want this as I am trying to figure out how much time my new sub gains or looses over say a week. Before anyone shouts at me, I did notice the clock on the home page of this site. Does that one keep good time? Jas |
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#2 |
"TRF" Member
Join Date: Jan 2008
Location: USA
Watch: 14060M
Posts: 921
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I use time.gov here in the US.
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Regards, Lars 14060M, 16570 White, 116200 Tuxedo Dial Georg Jensen 2347 |
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#3 |
"TRF" Member
Join Date: Nov 2009
Real Name: Matt
Location: Indiana
Watch: 14060M
Posts: 138
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x2
![]() It appears that time.gov is running about 6 seconds fast compared the TRF clock.
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116400V 14060M "3 O'Clock Lume Club" - Charter Member Join the group:http://www.rolexforums.com/group.php?groupid=20 |
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#4 |
"TRF" Member
Join Date: Dec 2009
Location: Canada
Posts: 776
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Try the Canadian NRC ( National Research Counsel ) atomic clock. You can get UTC on part of the map to get you somewhat close to your local time. Once the Java applet starts, it will show the correct time and how much your computer clock is off by.
http://time5.nrc.ca/webclock_e.shtml |
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#5 |
"TRF" Member
Join Date: Jul 2009
Real Name: Brian
Location: LA
Watch: SD43
Posts: 360
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United States Naval Observatory Time
Google it and get the link. |
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#6 |
Member
Join Date: Jul 2009
Real Name: Bill
Location: central Florida
Watch: Sea Dweller
Posts: 97
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Truth be told, the best way is to acquire a cheapo Citizen atomic. It doesn't have to be a neato-spiffy show-off piece; a simple $30.00 ~ $50.00 usd piece would work just fine.
This watch would (hopefully) sync every night with the closest transmitter, and you'd never have to do math to see how far off your computer is .... Check on some of the other watch forums that are more closely associated with Seiko/Citizen; study up on the watches available, and how well the reception is in your part of Wales. Whatever you do, have fun! And please don't set dinner by the results; a few seconds here-and-there really means little in the grand scheme of things .... ![]() Cheers! Bill |
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#7 |
TRF Moderator & 2024 DATE-JUST41 Patron
Join Date: May 2007
Real Name: Larry
Location: Mojave Desert
Watch: GMT's
Posts: 43,342
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The TRF clock is not independent.......... it gets it's sync from your computer, so if your computer is off by a bit (and many are) it is a poor choice to use on a regular basis for calibraton..
The USNO clock is a world standard that other standards adjust their clocks to... your computer will also sync to it when you log on to the site (check your auto settings) http://www.usno.navy.mil/USNO/time/d...cks/simpletime
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(Chill ... It's just a watch Forum.....) NAWCC Member |
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#8 |
"TRF" Member
Join Date: Dec 2007
Real Name: John
Location: Washington
Watch: 16710, 16610, DJ
Posts: 7,329
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Any of the web based sites listed above are good, but are affected by the latency of your internet connection. time.gov gives an appoximation of it on the site. It can be as much as 1.5 seconds or so. Just something to keep in mind.
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#9 | |
"TRF" Member
Join Date: Dec 2009
Location: Canada
Posts: 776
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Quote:
http://time5.nrc.ca/JavaClock/timeDisplayWE.shtml Robert |
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#10 |
"TRF" Member
Join Date: Dec 2009
Real Name: Jason
Location: Wales
Watch: SS Sub Date 'V'
Posts: 199
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Many thanks guys.
I'll check these out, it was only to kep a track of how my new watch was doing. My dinner is always ready at exactly the same time everyday. When the wife puts it on the table. I hope she doesn't read this........ |
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#11 |
"TRF" Member
Join Date: Nov 2009
Location: Liverpool
Watch: GMT IIc
Posts: 43
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Not sure about online... but I use this to set mine...
![]() ![]() Hasn't lost a second in 5000 years!! And it doesn't need winding. ![]() |
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#12 | |
"TRF" Member
Join Date: Feb 2007
Real Name: Mark 哥
Location: UK
Posts: 860
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Quote:
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#13 |
"TRF" Member
Join Date: Apr 2007
Real Name: Martin
Location: London
Watch: Sub,Exp2,BlkBy,SD
Posts: 1,258
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I just dial Tim.
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Lest we forget. |
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#14 |
"TRF" Member
Join Date: Jan 2009
Location: New Jersey
Watch: PP 5712/1A
Posts: 518
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http://wwp.greenwichmeantime.com/
By the way, latency does not affect the time readings as this is compensated for via packet stamping. (even that is just milliseconds anyway) You can be certain that you will see a consistent and accurate time reading at the above site. As someone explained, the TRF clock simply displays the time setting of your local machine. If you set the time sync setting on your PC to time.nist.gov, it will be almost perfectly accurate to the above site, at least at the time of sync. PCs are notoriously bad clocks and lose or gain time very quickly. |
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#15 |
"TRF" Member
Join Date: Mar 2009
Real Name: Jason
Location: USA
Watch: Rolex/Tudor Divers
Posts: 7,973
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Best Regards, Jason Just Say "NO" to Polishing ![]() Card-Carrying Member of the Global Association of Retro-Grouch Curmudgeons LIfe is too short to wear inexpensive watches ![]() PLEXI IS SEXY |
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#16 |
"TRF" Member
Join Date: Oct 2009
Real Name: Matt
Location: Flint, MI
Watch: Ω 3570.50.00
Posts: 2,058
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Checked with the US time website... my Computer/TRF time is exact to the second
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Miss you JJ Wash out this tired notion that the best is yet to come |
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#17 |
Banned
Join Date: Jan 2008
Location: New Jersey
Posts: 1,858
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The interweb does not operate at the speed of light re; latency.
In the U S of A your tax dollars support the Bureau of Standards; the final ultimate say of "what time is it". They broadcast every second of every day of every week of every month of every year for your listening pleasure on 2.5 MHz, 5 MHz, 10 MHz, 15 MHz and 20 MHz. . The best time to listen is when they broadcast a leap second. Let us not hold our breath waiting for Swiss watchmakers to put that into the ultra high end perpetual calendar watches. They can't even do daylight savings time; my two hundred dollar Casio can easily do daylight savings time as well as any leap second the Bureau decides to add. Good news for mechanical watch owners; no leap second in 2010. P.S. So you guys rely on digital timing to set your analog master pieces; your secret is safe with me. P.P.S. the official time for the U S of A is http://www.time.gov. It may not be correct but it is the legal time and that is what counts in a court of law. Last edited by Earl Camembert; 23 January 2010 at 03:07 PM.. Reason: P. P. S. |
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#18 |
"TRF" Member
Join Date: Dec 2009
Real Name: Don
Location: SE USA
Watch: Rolex GMTIIC
Posts: 392
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gmt247.com is the most consistent source that I have found. I have noticed some fluctuation, "maybe +-1 second at time.gov". That's not really enough to get to exited about though.
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R.I.P. JJ Rolex GMTIIC M Rolex GMTIIC V TRF Rolex 16610 M Rolex 116610 G Omega SMP Live Free Or Die |
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#19 | |
Banned
Join Date: Oct 2009
Real Name: Daniel
Location: UK
Posts: 520
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Quote:
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#20 |
"TRF" Member
Join Date: Jul 2009
Real Name: Mike
Location: Orlando
Posts: 2,471
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Rolex.com
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#21 |
"TRF" Member
Join Date: May 2008
Real Name: Bob
Location: Paradise CA
Posts: 920
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I bought a $45 digital clock that updates by satellite twice a day. I got it at Levenger.com. So I just sinc my watches to it.
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16610 Submariner - 116710 GMT II C - 16570 Explorer II - 126710BLRO GMT II (Pepsi) - 116300 Datejust II |
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#22 |
"TRF" Member
Join Date: Oct 2007
Real Name: Ed
Location: New York
Watch: 16234, Speedy Pro
Posts: 128
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If you want to check the watch's error over a week any of the websites should be good enough. I would expect that the latency would be pretty constant, and so will cancel out in any week to week comparison. And if it's off by a second- that's negligible compared to the drift in most watches over a weeks time.
I use the shortwave radio broadcasts from the National Bureau of Standards because I happen to have a bunch of radios, but that's not practical for most people. My second choice would be the desktop digital clock I got for my wife, it synchronizes to NBS radio transmissions. Another possibility may be the time on the cable modem. I would assume that the modem is synched to a good clock in order to handle the digital data stream. |
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#23 | |
"TRF" Life Patron
Join Date: Jun 2005
Real Name: Peter
Location: Llanfairpwllgwyng
Watch: ing you.
Posts: 52,764
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Quote:
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ICom Pro3 All posts are my own opinion and my opinion only. "The clock of life is wound but once, and no man has the power to tell just when the hands will stop. Now is the only time you actually own the time, Place no faith in time, for the clock may soon be still for ever." Good Judgement comes from experience,experience comes from Bad Judgement,.Buy quality, cry once; buy cheap, cry again and again. www.mc0yad.club Second in command CEO and left handed watch winder ![]() |
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#24 |
"TRF" Member
Join Date: Dec 2009
Location: London
Posts: 2,081
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I use the gmt site as previously linked on this thread. Seems to be accurate to other sources.
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