Network Time Protocol, used to synchronize clocks on the Internet.

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Daylight savings issues in windows, possibly related to NTP sync

We have an app deployed to information kiosks across a number of sites, where employees of our client can log in and sign-on/off their shifts and view timesheets etc. Approaching every daylight ...
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11 views

Implications of disabling VMICTimeProvider (Windows7)?

I have a private network of two machines: one is Windows 7 and the other is not windows. I want the Windows7 machine to run an NTP server for the non-windows machine to synch to. The instructions in ...
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40 views

ntpd & ntpdate won't set time

I recently purchased a new development board and, unfortunately, the edition of Linux provided doesn't sync with an NTP server automatically. I have tried using "ntpd -dgq", however the output is ...
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123 views

Sync windows 8.1 time with NTP server when boots up?

I have an issue with BIOS causing time to be reset in 9 of 10 times when system boots up...While windows 8.1 somehow trusts the time from BIOS more than NTP, how can I force the windows to sync with ...
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1answer
80 views

5 Feb 16:53:26 ntpdate[414]: no server suitable for synchronization found

I want to setup ntp in beaglebone based custom board. /etc/ntp.conf file content is as mentioned below driftfile /var/run/ntp.drift server pool.ntp.org server 1.in.pool.ntp.org server ...
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68 views

Godaddy fails to properly configure NTP on their node server hosting my VPS [closed]

I have a few VPS servers with Godaddy and with every new server I contracted I had to ask them to set up NTP on the node hosting my container. They always did until now. It seems like their ...
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2answers
93 views

Setting Time in Lubuntu

I have a time server running on a server PC that is meant to change the times of various guest PCs as a result of a TCP/IP command on port 9000 issued by a control application running on an integrated ...
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1answer
150 views

Why does my router send an NTP request to ntp.nasa.gov?

I have enabled logging on my router and restarted it. At the end of the log file it says: Sat, 2000-01-01 02:02:19 - Send out NTP request to ntp.nasa.gov Wed, 2014-01-15 18:01:39 - Receive NTP Reply ...
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96 views

Can I use different server IP address in NTP time synchronization?

By default, it is something like, server 0.rhel.pool.ntp.org server 1.rhel.pool.ntp.org server 2.rhel.pool.ntp.org Can I choose my server IP address for synchronizing time?
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290 views

How to correctly sync time in linux running as virtual guest after host resumes from hibernation?

I use multiple virtual boxes for development and correct time and date is important for me when I push git commits. I do not shut down my host - it runs for months without restarting. I only hibernate ...
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29 views

How should I troubleshoot a Qnx ntp synchronisation issue?

I setup the w32time service to act as an ntp server, and it has been confirmed on at least one other client (MacOS X). I've used a few different utilities in Windows that indicate that there indeed is ...
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196 views

How to setup robust Windows time synchronization?

I have an incorrect time on my Windows machine. I'm not sure how to specify the proper timezone and setup an NTP synchronization. When i'm using a dualboot configuration with Linux (Ubuntu) my time is ...
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1answer
335 views

How long does it take NTP to “sync up”

Assuming "sync up" means achieving similar (~1ms) times, how long does it take to: "Sync up" my local computer to an NTP server? "Sync up" my alternate local (networked) computers to one central ...
3
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1answer
241 views

NTP daemon or ntpdate doesn't synchronize

I'm having some problems with synchronization with an NTP server. 1) The NTP daemon doesn't sync the system clock at all, even though it's running (confirmed with /etc/init.d/ntp status). Forcing to ...
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1answer
89 views

Why ntp settle time too long?

I simply try to set-up NTP to my system. Both server and clients will run on my computer which are linked together with local link. One of them will have the reference clock. Both the server and ...
2
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1answer
1k views

Which clients accept DHCP option 42 to configure their NTP servers? [closed]

From what I can tell based on observations of my own OS X 10.8.5 machine, and the information in "Windows clients not using NTP server provided via DHCP," neither OS X nor Windows 7 are able to ...
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82 views

Will a Linux NTP server with an upstream Windows time source have any less jitter?

For my infrastructure we have a platform which cannot synchronize over NTP to a W32time service due to too much jitter from the Windows time source. So my question is, if we have a W32time source ...
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1answer
142 views

NTPD: drifts away from system clock

Using RHEL 5.x on a workstation. I set the clock using 'ntpdate 0.us.pool.ntp.org' and then start NTPD using 'service ntpd start'. (this also happens at boot). Watching this over the next 20-30 ...
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3answers
9k views

Updating Time : ntpdate[3108]: the NTP socket is in use, exiting

The time on my system is incorrect for some reason. i need to run an update but i can't seem to be able to this is the errror. ntpdate pool.ntp.org 31 Aug 12:31:59 ntpdate[3108]: the NTP socket is in ...
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2answers
576 views

Os X - Why do I need to turn on WiFi to determine closest location

Why do I need to turn on WiFi to determine my closest location? For some reason, my mac won't get the latest time from the NTP server if I am plugged into Ethernet. What could possibly be different ...
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3answers
887 views

How to know current time from internet from command line in Linux?

How to know current time from internet from command line in Linux? For example, with ntpq program? Note: not from computer or operating system clock, but from internet? Note: I don't want to CHANGE ...
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883 views

Archlinux wrong localtime

Here is datetimectl output, Why local time is not set to Universal time? And I have enable ntpd service. The local time should be Sun 2013-08-11 21:45:21 UTC. Local time: Mon 2013-08-12 ...
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2answers
1k views

How to connect to time server behind corporate firewall/proxy server?

I am setting up an internal web server at big company and we recently changed proxy servers companywide. So time sync won't work. Tried all of the W2008 defaults, tried resetting the time service... ...
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1answer
95 views

Serving manually set time

I have set my NTP config to this: # local server server 127.0.0.1 fudge 127.0.0.1 stratum 10 # Only allow read-only access from localhost restrict -4 default kod nomodify notrap nopeer noquery ...
2
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1answer
85 views

How to isolate why my system date is going crazy?

The date on my x86 machine is going crazy. When I boot, it's in 1980 (as expected since the CMOS battery is dead). So I NTP sync it with no problems. Some time later (within a few hours, and even ...
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133 views

system clock is 5.5 ahead although ntp

I've checked configs and even installed ntp server, nothing seem to fix this, sudo dpkg-reconfigure tzdata Current default time zone: 'Asia/Tehran' Local time is now: Thu May 9 00:49:38 IRDT ...
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1answer
4k views

ntpdate[3912]: no server suitable for synchronization found

I've configured ntpd on a CentOs install with a simple /etc/ntp.conf with only 3 lines: server 0.pool.ntp.org server 1.pool.ntp.org server 2.pool.ntp.org server 192.168.1.1 Unfortunately, no matter ...
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1answer
102 views

an unconfigured ntp server appears in ntp client's list in solaris 9

So i have a solaris 9 server with running ntp client I want it to poll 10.10.1.122 (local ntp server, there is no internet access) so i configured the ntp server in the config file (below) however ...
2
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1answer
5k views

Portable command-line for syncing Windows OS clock to a NTP server

Is there a "portable" way across recent (this millennium) versions of Windows for forcing a NTP sync? On Windows 7, there are even prerequisites - the service Windows Time needs to be running. ...
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157 views

Using NTPD as a client on Cent OS without Undisciplined Local Clock any disadvantage?

The following is the NTP configuration. My server is a physical system, not a virtual machine. The following ntp-4.2.2p1-15.el5.centos rpm I am using. tinker panic 0 restrict default kod nomodify ...
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1answer
262 views

Windows XP NTP synchronization

I am getting the following error message when trying to synchronize a Windows XP to our NTP. Works with all other Linux servers. The message I receive is: The time sample was rejected because ...
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1answer
4k views

Ubuntu 12.10 Clock is wrong

I have an issue with Ubuntu Quantal, as it shows the wrong time. It is completely messy, the right time from time.is now is 09.43 and my clock shows 17.48. I am using ntp service and I already checked ...
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566 views

Configuring ntp server on Ubuntu

I am trying to configure the time on my system, as per one of the ntp servers provided on net. However, the time doesn't change. I am doing this on Ubuntu 12.04 which is installed in Oracle VirtualBox ...
2
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1answer
2k views

How do I get the current date according to an NTP server without setting it locally?

I want to get the current date and time according to a remote NTP server, using Linux. I don't want to change the local time as a result; I just want to get the remote date, adjusted for the local ...
2
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1answer
371 views

Windows 8 w32tm clock drift correction

I am running Windows 8 (no virtualization, X79 + i7-3820), and have separate Linux NTP server in my local network. Linux NTP is typically within 1ms of true time. I've set Windows 8 to synchronize ...
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1answer
452 views

NTP client not update

I have many linux Virtual machine on ESXI, I have configured one linux machine as NTP server and that server is updating its time from NTP server over internet, this server is working properly and ...
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2answers
3k views

NTP no server suitable

Been trying with a lot of configuration, following different tips but cant get it to synchronize with a server, ntpdate -u 192.168.1.100 3 Oct 01:01:13 ntpdate[11170]: no server suitable for ...
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2answers
636 views

ntpdate with crontab or ntpd?

(1)autostart one ntpd service in all cluster nodes and point the reference serve to one LAN server. (2)use crontab to ntpdate every certain minutes. In cluster environment, which will be a better ...
2
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3answers
231 views

Why to synchronize a time on a computer?

Why do I need to synchronize a time on my computer? My wrist-watch gives no more than half a second error per year without using any NTP server. Why do I need to synchronize a computer with other ...
3
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2answers
3k views

What happens when router has been set to incorrect time?

I have a D-Link router for my home Wi-Fi network. Everyday at least once the internet suddenly goes down. I am simply not able to connect to the Wi-Fi network. If I just restart the router, it starts ...
2
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1answer
315 views

Correcting clock drift in VM guests

I have a Unix O/S running as a guest under a hypervisor on a Linux host. The guest OS clock is 2s adrift from the host after 24 hours. I'd like to keep clocks in sync to less than a second for ease of ...
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2answers
2k views

How does ntpstat work?

I have installed ntp on some of the network machines I am working on. When I check ntpstat, I see that it says clocks are synchronized to some ms, usually between 12 and 70 ms. My questions are: ...
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1answer
741 views

Error occurred during NTP sync on Windows Server 2008 R2

I have two Windows Server 2008 R2 Standard servers. The first can correctly sync its time with the default NTP server time.windows.com, but the second cannot. The error displayed is: An error ...
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2answers
17k views

How can I query an NTP server under Windows?

I am not interested in synchronizing my local clock with the remote server. I only want to query it and print the result. I would have assumed that there is a port of ntpq for Windows, but was unable ...
2
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1answer
173 views

Alternative to Qlock

I work in a NOC that needs to display times from different cities across two 50 inch screens connected to a single windows 7 enterprise box. Currently, we are using http://www.qlock.com/ but I would ...
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3answers
842 views

Does it matter which NTP time server do I choose in Windows?

When enabling Windows to set system time via Internet, I'm presented with the following dialog: Does it matter which time server I choose? How would I know if one was "better" than the others?
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How can I check a system's current NTP configuration?

I need to verify the current NTP configuration on some Windows systems. Ideally, I'd like to be able to do this via command line instead of navigating through configuration screens (especially since ...
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2answers
5k views

Determine the time difference between two linux servers

I am troubleshooting a latency network issue on a network. It is probably a nic or cabling issue, but while I was going through the process of figuring it out, I was looking at the timings of a ping ...
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2answers
4k views

My system clock is an extra (extra) hour ahead during BST/ daylight saving

I have a problem when my Windows 7 64-bit laptop is used during BST (British Summer Time)/ daylight saving periods. Instead of the +1 shift in time, the system clock shifts +2 hours and can be a few ...
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1answer
1k views

How to configure Windows Server & Desktop OS to use multiple Network Time (NTP) Servers?

We experienced an outage in our usual NTP (Network Time Protocol) server - a Linux box that we sync all of our systems to. I am noticing that in the "Adjust Date/Time -> Internet Time" tab I can set ...