Windows: Last month we suggested that you synchronise your Windows clock with an alternative time server to increase accuracy. In order to make your Windows clock as accurate as possible you should also consider tweaking your settings so the clock updates daily instead of weekly. This option is not available in Date/Time settings, but you can do it by setting a daily update as a task.
Most computers suffer from clock drift; differences of seconds or even minutes between the software clock that runs when your computer is on and the battery-operated hardware clock in BIOS. The most common reason for the drift is leaving your computer turned on for more than a day which can cause an estimated clock drift of a minute for every day without rebooting. Extreme temperatures, malware, and electromagnetic interference can also cause clock drift. You can see how far your computer’s clock drifts from the NIST time server here.
Technology blog One Tip a Day offers instructions on how to easily create a task that updates your clock daily.
- Click on the start button and type “Task Scheduler”. Click on the link that appears.
- Click on “˜Create Task’ and give the task a name. I used “Daily Time Update”.
- In the General tab, click on the ‘˜Change User or Group’ button and enter the name ‘˜Local Service’. Check the box for ‘˜Run with highest privleges’.
- Go to the ‘˜Triggers’ tab and click ‘˜New’. Select ‘Daily’ and choose a time for the task to run.
- Go to the ‘Actions’ tab and add these two actions in order, one at a time:
- Choose ‘Start a program’ enter
%windir%\system32\sc.exe
with the arguments
start w32time task_started
- Choose ‘Start a program’ enter
%windir%\system32\w32tm.exe
with the arguments
/resync
- Choose ‘Start a program’ enter
- Go to the ‘˜Settings’ tab and check the box ‘˜Run as soon as possible after a scheduled start is missed’.
Save your task. If you want to make sure the task works properly you can right-click on the task name and run the task manually.
Keep in mind that after adding the daily time task the Date/Time settings will still say the next synchronisation is a week away.
Make Windows Clock More Accurate — Part II [OneTipADay]
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