Questions relating to time and timezones.

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38
votes
8answers
73k views

How to force a clock update using ntp?

I am running Ubuntu on an ARM based embedded system that lacks a battery backed RTC. The wake-up time is somewhere during 1970. Thus, I use the NTP service to update the time to the current time. I ...
17
votes
1answer
21k views

How do I change my timezone to UTC/GMT?

Currently when I execute the date command from bash I get the following displayed Thu May 17 12:21:00 IST 2012 Below is my timezone config based on executing dpkg-reconfigure tzdata Current ...
13
votes
4answers
19k views

How do you set the timezone for crontab?

I have set up ACPI wakeup so my laptop wakes up at a certain time each morning. The timezone for this is UTC. I want to set up my crontabs also using UTC so they fit with the wakeup alarm. How do ...
12
votes
4answers
8k views

How do I show date next to time in the panel with gnome-shell?

I would like to show the date in the bar up the top there (next to the time). I can not see any obvious way to enable this.
12
votes
2answers
18k views

Where does ntpdate get its settings from and what is the “no servers can be used” error about?

When I run ntpdate on its own, I get the following output: 8 Jun 15:47:46 ntpdate[31251]: no servers can be used, exiting If I run it with the -q ntp.ubuntu.com switch, it seems to query just ...
10
votes
6answers
4k views

Time is not displaying in the Top Bar

I'm running Ubuntu 13.10 with dual boot along side Windows 8. The top panel or bar doesn't display the time. When I open the Clock menu, all the settings over there are grayed out (Settings -> Time ...
10
votes
3answers
7k views

How do I change the timezone to UTC?

I just installed a Ubuntu 11.10 box and I'm trying to figure out how to set the timezone to UTC. I have it set to London at the moment, but UTC doesn't appear to be an option. Help?
10
votes
2answers
5k views

How to show seconds on the clock in GNOME 3?

Is it possible to show the seconds on the clock in GNOME 3?
10
votes
1answer
803 views

How can I automatically time commands in bash?

In tcsh, there's the variable time: The time shell variable can be set to execute the time builtin command after the completion of any process that takes more than a given number of CPU ...
8
votes
3answers
5k views

Why does time change in Ubuntu after installing Windows

Today I was installing Windows 7 on the same computer I have Ubuntu. For some reason, after installing Windows 7 and going back to Ubuntu the time went from the correct hour at that moment, 12:30PM to ...
8
votes
1answer
1k views

How can I set the clock to 24 hour mode? [closed]

How can I set the clock to global (24h time) in Maverick instead of am/pm? Including the login screen? I mean there's no option to do that in rclick clock > preferences or in system > admin > time ...
8
votes
3answers
6k views

How to fix wrong system time and date?

I just ran a clean install of 12.10 on my sys76 laptop. Time and date reads: 19:36 31 december 1969, even though it is: 13:29 07 november 2012. I have it set for my location and it won't change ...
8
votes
2answers
6k views

How can I set the date format to my country setting?

I am German, but I use only English software. Hence, I am also using English Ubuntu. It's not because I don't know how to install German Ubuntu. It's because I prefer to work with English software ...
8
votes
2answers
2k views

Will the Linux clock fail at January 19, 2038 3:14:08?

I am a bit concerned about this. It's called the "year 2038 problem". Is the Linux kernel or Ubuntu ready to handle dates after this yet, as of 12.04?
7
votes
6answers
7k views

How do I manually set the system time in VirtualBox?

I am trying to manually set the computer's time in VirtualBox but it always resets itself to what it was before I changed it. How can I disable ntp and tell the system what time I want it to be?
7
votes
3answers
17k views

how to display current time setting?

how to display the current time configuration like time zone in ubuntu? in centos it is "cat /etc/sysconfig/clock"
7
votes
4answers
8k views

Clock displays incorrect time

I've just installed 64-bit Ubuntu 11.04 and after I updated it, the clock stopped displaying the right time. It's now 8 hours behind my normal time. I've checked the Time and Date settings and the ...
7
votes
1answer
883 views

How do I add a specific time-server?

At work I can only connect to a specific ntp time-server. Under Ubuntu 10.10 I was able to add that server somewhere under time/date settings. Now under Ubuntu 11.04 I cannot find that option anymore. ...
6
votes
2answers
5k views

How to permanently change the time in Ubuntu Server

I have changed the time in Ubuntu Server 11.04 but when i reboot it resets to the default it has. How to change the time that when I boot it stays like i changed it. already tried date but I think ...
6
votes
1answer
567 views

Intense hard drive access activity immediately after log in

I upgraded my ubuntu karmic to lucid a few months ago. I don't know when it all started but the thing is that when I log in, I see a very intense disk access activity for a while that prevents any ...
6
votes
1answer
8k views

Installing Roundcube Web Server, gave date and time error while checking PHP configuration

Installing Roundcube Web Server, gave date and time error while checking PHP configuration. I am trying to configure the webamil using roundcube. Below is the details. pop / smtp service is working ...
6
votes
2answers
4k views

How to change Thunderbird's display time to 24h format?

Currently Thunderbird displays time in AM/PM mode. How can I change it to 24h mode? UPDATE 1: $ locale |grep LC_TIME LC_TIME="en_US.UTF-8"
6
votes
2answers
166 views

Packages installed within a certain time frame

Could someone please help me with how I can list the packages that were manually installed within a certain time frame. For instance, If I want to see a list of packages that were manually installed ...
6
votes
1answer
619 views

Clock stops ticking when inactive, causing drift

The clock applet drifts in time. Clock is set to "synchronize with internet ..." so it is correct at startup, but then if I stay inactive for some time, may be 5 min as well as 1 hour, the clock stops ...
5
votes
1answer
2k views

How do I migrate to UTC hardware clock?

I have been using local time hardware clock because of sharing the machine with a Windows system. Now I don't use Windows any actively and would like to set the hardware clock to UTC. How to ...
5
votes
3answers
3k views

How can I force Ubuntu to use the BIOS internal clock instead of NTP or whatever its being used?

My clock starts running out of sync in Ubuntu which doesn't happen in Windows. The problem is that it just starts losing time after a moment of syncing it with an NTP server, that means the clock is ...
5
votes
2answers
1k views

ureadahead seems to block the system on boot

I had a look at my bootcharts and something seems to be wrong with them. The ureadahead process does what it's supposed to do (disk utilisation is 100% most of the time), but it also blocks any other ...
5
votes
1answer
3k views

How do I set my clock in Windows to UTC / localtime?

I have a dual boot and a I configured windows to use UTC with a registry fix as explained in here: Ubuntu 12.04 clocktime is off by 4 hours Now, I need to come back to localtime again, and I have no ...
5
votes
1answer
1k views

How to change “inode change time” of a file?

I tried to use touch -d "2011-09-15 16:50" test.txt but it just modifies the last access time and the last modified time. Access: 2011-09-15 16:50:00.000000000 +0700 Modify: 2011-09-15 ...
4
votes
4answers
367 views

My system time resets to January 2007. How can I solve this?

I am facing a weird problem that my system clocks resets to jan 1 2007 to 0:00. Can anybody help me to rectify it? The bios show the same time. What should I do?
4
votes
2answers
6k views

What units does the ntp drift file use?

When the ntpd daemon is running, the file: /var/lib/ntp/ntp.drift gets updated periodically. Example: 17:20 hostname 118 ~> ls -l /var/lib/ntp/ntp.drift -rw-r--r-- 1 ntp ntp 7 May 20 16:46 ...
4
votes
1answer
2k views

How to change system time or force a sync with hardware clock

My laptop is probably running out of CMOS battery, I know I have to fix it soon, but until then, this very annoying issue keeps me from using it. Scenario: My system clock is reset to 15/12/08 11:00 ...
4
votes
1answer
269 views

How to stop automatic time update?

I want to know is there any way to stop automatic time update permanently in Ubuntu 12.04 . Thank you
4
votes
1answer
1k views

Ubuntu System time is slow/behind

I am running Ubuntu 11.04 on my Fujitsu Siemens AMILO Pro laptop. The system clock keeps on falling behind. I set it to the correct time, but it slows down and speeds up sporadically. Can I fix ...
4
votes
1answer
861 views

Menu bar shows the word “Time” where current time should be

I just upgraded from 10.10 to 12.04. A picture says a thousand words in this case. Here's a G+ post with a screenshot of my menu bar: I've tried messing with the clock settings---specifying a ...
4
votes
1answer
386 views

Clock is one hour too fast, how do I fix it?

I have installed Ubuntu 12.04. I am in Europe/Dublin timezone. My clock is one hour fast. I'm getting time off the Internet. Here is the output from dpkg-reconfigure tzdata at 15:41. Current default ...
4
votes
1answer
670 views

System hangs on changing time

My machine is always showing an hour ahead of the actual time. I am in Texas currently but the time never picks Day light savings. Any time I click on Set Time(Top Right Corner), my system just hangs ...
3
votes
2answers
97 views

Add seconds to a given date in bash

I have a complete date plus hours and minutes. I would like to add a number of seconds and display the result as a date "day.month.year hour:minute". "date" doesn't seem to be able to add seconds to ...
3
votes
4answers
4k views

Kubuntu and Windows 7 dual boot, clock time changes automatically

I had windows 7 installed, and I set my PC clock to a specific time. It worked fine but then i also installed Kubuntu (now its a dual boot). Whenever I run Kubuntu my clock changes time by -4 hours ...
3
votes
1answer
851 views

organization of zoneinfo folder

My questions are related to /usr/share/zoneinfo folder. Why is there a posix folder, which has the same content and files like zoneinfo? I only checked few files and they had same checksum. Why is ...
3
votes
1answer
397 views
3
votes
2answers
803 views

Command not found when trying to set a format for the time command

I am trying to get the time it takes to run a command, with the output in a specific format: time -f "%E" ls -l This is similar to the example in the man page (and on the online man page). However ...
3
votes
2answers
1k views

Time sync between ubuntu and windows

Iam working as a linux admin. In our company we are using a ubuntu server with windows clients. The time in each clients are not same. Is it possible to sync time from ubuntu server with the windows ...
3
votes
1answer
657 views

How to display world daylight map?

I really liked the world map with daylight time displayed on it, when you click on date/time tray icon. It appeared right bellow the calendar. How do I get it back in unity?
3
votes
2answers
866 views

For some reason I want to set the system date to earlier month but I am unable to set it

For some reason I want to set the system date to earlier month in my ubuntu 12.04 machine? But I am unable to set it. When I tried to change the system time to earlier month or year getting back to ...
3
votes
2answers
520 views

Program for register work time / task

I'm looking for a program in which I and my small team can register the number of hours it takes to do a certain task. This would be registered daily and if possible would also be free or close to it. ...
3
votes
1answer
834 views

How can i add a second time zone? [duplicate]

Possible Duplicate: How can I get a world clock indicator? In 11.04 i had a second time zone in the Clock/Date Dropdown. In 11.10 there seems to be no obvious way to do this, is there one?
3
votes
2answers
857 views

I want my panel clock to be “digital” (2011-01-01). Is there a setting, or another clock? [duplicate]

Possible Duplicate: How to change the format of the date & time displayed in top panel ? I've been using computers for too long. The "human" display of the date/time in the panel looks ...
3
votes
1answer
185 views

How do I add missing cities for the other locations on the time & date clock?

I want to add 'Amsterdam' and 'San Francisco' to my "Time in other locations" setting on the clock, but those cities seem to be missing. What is wrong? How do I add them? I'm using Ubuntu 12.04 LTS. ...
3
votes
2answers
199 views

How to add current time to the unlock screen?

I frequently have to unlock my computer just to see what time is it right now. Since time isn't security-sensitive, how can I add it to be displayed on the unlock screen? This is using Unity, ...