45
votes
4answers
3k views

NTP - How are NTP servers so accurate

I've noticed that on my servers and other machines the clock always drifts so it has to sync up to remain accurate. How do the NTP server clocks not drift and always remain correct?
2
votes
1answer
118 views

What is the rationale behind the default values for adjtimex --adjust?

The adjtimex utility has an --adjust mode that can be used to compare the system clock with the CMOS clock, calculate suggested values for the tick and frequency offset kernel time variables, and ...
6
votes
4answers
9k views

Windows 7 time keeps changing by itself

As the title suggests windows time keeps changing in random times, with random amounts. It sometimes happens every minute, sometimes it is good for hours. If I go hit synchronize with Internet time, ...
0
votes
1answer
383 views

How to have the time permanently visible in Win 8.1 Modern UI?

How can I keep the time always on top/always visible when I'm using different apps in the Modern UI mode? Thanks!
6
votes
2answers
2k views

Clock running fast after OS X Mavericks install

I've noticed my OS X system time on my iMac is running faster after I updated to Mavericks, after about a week it is a good 4 or 5 minutes too fast. In my Date & Time preferences everything is ...
4
votes
1answer
306 views

Windows Time clock going twice the speed

The computer is custom build, no pre-installed windows. I had windows 7 about a year ago, and had this problem then I went to windows 8, everything was fine but I decided to come back to win7 and the ...
1
vote
4answers
4k views

How to get video duration in seconds?

How can I get video duration in seconds? What I've tried: ffmpeg -i file.flv 2>&1 | grep "Duration" Duration: 00:39:43.08, start: 0.040000, bitrate: 386 kb/s mediainfo file.flv | grep ...
0
votes
0answers
698 views

Getting clock / time info from a Win 7 PC to an Arduino

Assume I connect a microcontroller board (like an Arduino) to a Win 7 PC via USB. Is there anything in the USB communication protocol that contains host clock data? In other words, can I sync the ...
2
votes
0answers
424 views

Windows 7 set to UTC RTC forcibly changes time

I really want to make Windows 7 understand that RTC in using UTC instead of local time. I found a solution, except for it does not play well with time synchronization. I have: Modified the registry ...
15
votes
4answers
940 views

How do PCs know when the time has changed?

In my country, the official time changes in the first month of spring and fall. When the official time changes, my mobile phone's and PC's clocks change as well. How do these devices find out ...
2
votes
2answers
378 views

Monitoring the wall time of a process on windows?

Windows Task Manager has the ability to show the current CPU time of any given running process on windows, is there any way (not necessarily through Task Manager) to get the current wall time of a ...
1
vote
2answers
1k views

Time randomly changing itself, internet randomly dying

I installed Windows 8 RTM a few weeks ago. It's not my first time installing it, but it's the first time having these annoying problems: Randomly, the system clock changes time all by itself - to ...
2
votes
0answers
261 views

Slow down clock/timer of a Linux program

Sometimes a Linux program requiring fast user interaction/manual dexterity runs too fast for me to keep up. Examples include video games and video players that don't let you control the speed. How ...
1
vote
0answers
273 views

How to skew a Mac's clock 10 minutes while still keeping it “synchronized”?

My wife is always running late. How can I skew her Mac's clock 10 minutes while still keeping it "synchronized"? I looked at the fudge setting of /etc/ntp.conf but it's only for a Reference Clock and ...
0
votes
1answer
483 views

Software for displaying multiple time zones

I need software that could display multiple time zones as I need them. Windows 7 displays 2 time zones but I need more. The software that I need should be freeware first, if not then payable I need a ...
5
votes
1answer
754 views

Computer clock drifts on standby. Can I make Windows synchronize time on every wakeup?

My Dell Vostro 1720 laptop's clock drifts when waking from standby mode (even by five minutes sometimes). This is really annoying and sometimes dangerous. I tried decreasing the Windows time sync ...
2
votes
3answers
45k views

Can't synchronize time, Windows 7

Ok, I finally installed Windows 7, clean install. Time synchronization does not work. Clicking "Update now" gives message: Unable to start the Windows Time service. Please try again later. I use ...
0
votes
1answer
5k views

Can I Set My Computer's Clock Display To 24-Hour Format? [duplicate]

Possible Duplicate: Can the Windows clock be configured to display a 24-hour-based time? The title pretty much says it here. I'm just wondering, is it possible to switch my Windows 7 ...
1
vote
1answer
502 views

Sync Windows' system time to a time server, but advance by 10 minutes from the time server's time

Is there a software or a way to configure Windows 7 such that I could sync the time to a time server, but have my system's clock advanced by 10 minutes from the time server's time? E.g. When ...
3
votes
2answers
6k views

Windows 7: System clock 2 hours behind on every boot

Windows 7: My time is always two hours behind the actual time. I've changed the time, but, whenever I restart it, goes back to the incorrect time, 2 hours behind the actual time. I'm on (UTC+02:00) ...
5
votes
5answers
8k views

How to show date with clock when Windows 7 taskbar is vertical?

On widescreen Windows 7 desktops, I prefer a vertical taskbar with small icons. However, this appears to remove the date from the clock display. Here's what it looks like, missing the date. How ...
8
votes
1answer
2k views

Can the Windows clock be configured to display a 24-hour-based time?

Is it possible to make the windows clock display its time in a 24-hour format instead of the default 12-hour format? There doesn't appear to be any way to do this via the UI, but I'm wondering if ...
4
votes
4answers
10k views

Why is my NTP controlled computer clock two minutes ahead?

The clock in my computer is configured to be synchronized using NTP. To verify this I have tried two NTP clients using various NTP servers. My computer and the NTP clients are in complete agreement ...
1
vote
3answers
3k views

Sync the clock on Windows 7 to the time server more frequently

On Windows 7, is the way to sync the clock to the time server more frequently still the same as before (by regedit)? Are there other ways such as by using the control panel or system tool?
1
vote
2answers
2k views

Synchronizing the clocks of two Windows-XP machines not connected to the internet?

I have a set-up with two PCs running Windows XP, both acquiring data from external sources and saving it locally with time-stamp per sample. At the end of each day I move that day's from both PCs to ...
9
votes
4answers
2k views

Is there any software or hardware which lets you stop, slow down, speed up or even reverse time?

Obviously I'm talking about time in terms of the PC clock rather than real time. We were testing an application we've developed at work by setting the clock forward and back to simulate different ...
4
votes
5answers
1k views

System clock runs behind

The system clock of my PC (not a laptop) runs behind. What could be the cause?