increase accuracy of the hwclock linux ubuntu pc when not connected to network

Posted on 2010-08-21
Last Modified: 2013-12-15
i am currently using the following commands to set the clock date & time using a network connection on a linux pc:

# dpkg-reconfigure tzdata
# ntpdate-debian
# /sbin/hwclock –systohc

The pc will be will not be connected to a network for a long period of time. Has anyone got suggestion on how to stop /slow the time drift in the PC clock time once the PC has been disconnected from the network?

Question by:gerrymac1943
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2

Expert Comment

ID: 33492123
You are probably best having a look at this for some background and further info:

If it is a server and the time is critical you can get atomic clock cards or radio clock cards to go in the machine to provide a more accurate time. e.g. something like:

Expert Comment

ID: 33592231
do you whant to stop time when network it's off or to fix time ?

Author Comment

ID: 33592281
i just want to keep the time as accurate as possible i.e. as if it was connected to a network . I've noticed that the time can drift by up to 1 hour after a week when disconnected from a network.

Accepted Solution

simoesp earned 500 total points
ID: 33594516
the only way is to have an atomic clock there's no other solution mabie try to change the bios battery  it could work

Author Closing Comment

ID: 33716131

Featured Post

Three Reasons Why Backup is Strategic

Backup is strategic to your business because your data is strategic to your business. Without backup, your business will fail. This white paper explains why it is vital for you to design and immediately execute a backup strategy to protect 100 percent of your data.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

The purpose of this article is to fix the unknown display problem in Linux Mint operating system. After installing the OS if you see Display monitor is not recognized then we can install "MESA" utilities to fix this problem or we can install additio…
Fine Tune your automatic Updates for Ubuntu / Debian
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question