If the computer's drive has not been reformatted and no Archive & Install or reinstall actions have taken place on the computer, the first install and run-up event should be in some of the system's logs; failing that, but still no major changes in the computer, the oldest date found in Get Info on the computer's hard disk drive (there would be two, first initialization or format for use of the drive in the Mac, and second, Modification Date) as the approximate date of installation. (You can highlight the Macintosh HD icon and choose Get Info for these.) There should also be other dates, however they may have been wiped or changed if anything was done in the System where utilities had been used to modify logs or cache histories. Tools such as OnyX & others can be used to wipe these kinds of data histories from the computer. If the hard disk drive has not been wiped, nor the creation date of any partitions made for that installation, an approximate date may be found. Disk Utility may be able to find some relevant information, probably not too different than that found by Get Info. And lastly (perhaps first) use of the Console utility in the Utilities Folder, may be able to show you a log of all activity; the oldest dates of plausible likelihood may be the one. The most recent installation and modification dates should be apparent; and any previous system info, should a complete reformat have been done and a new full install performed, would be gone from your view. Since dates of changes made to the system would be newer than the first original installation, many other dates and changes each time a software update or new App, a widget, or Disk Utility's 'repair disk or repair disk permissions' were run, would offer a newer date. These are possible leads. If I had the MacBook/Pro here, I could find the date common to the first OS X run of the current installed system; but if it were a clone, the date may not be of that earlier event. Console logs cover many aspects of the system and what runs within it. So, that may be a place to look. And there are several kinds of logs. Good luck & happy computing! 🙂
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Oct 23, 2009 9:17 PM
It is rare for a Mac to display incorrect Time and Date. However, this can happen on a Mac that has been laying idle or not connected to the internet for a long time. Fortunately, fixing the clock on a Mac that is displaying incorrect time and date is easy in most cases.
Fix Mac Showing Incorrect Time and Date
In general, Mac’s are set to update their clocks automatically by connecting to Apple’s reliable time service (time.apple.com) using an internet connection. This explains why a Mac that has not been connected to the internet for a long time can end up showing incorrect Date and Time.
Apart from this there can be other reasons for your Mac showing incorrect Time, ranging from a change in Time Zone (while travelling) to minor software glitches which can prevent a Mac from updating its clock.
Let us take a look at How to Fix a Mac that is showing incorrect Time and Date.
Restart Your Mac
The simple process of restarting a Computer has the capacity to fix minor software glitches and fix problems. Hence, you should never shy away from this simple step of restarting your Mac to see if it can fix the incorrect time and date problem on your Mac.
1. Click on the Apple icon in the top left corner of your screen, and then click on Restart from the Drop-down menu.
Check Date and Time Settings on Mac
Follow the steps below to make sure that your Mac is indeed configured to set its time automatically by connecting to Apple’s time service.
1. Click on the Apple icon in the top Menu bar on your Mac and then click on the System Preferences option in the drop-down menu.
2. On the System Preferences screen, click on Date & Time option.
3. On the next screen, make sure that the option to Set Date and Time Automatically is enabled (See image below)
4. Enable the option for Set Date and Time Automatically, in case it is not enabled on your device.
Note: You need to be logged in to your Admin Account in order to Enable or Disable the option for “Set Date and Time Automatically”.
Correct Date & Time Manually On Mac.
As mentioned above, your Mac can end up displaying incorrect time whenever you happen to cross a time zone while travelling and also due to minor software glitches on your Mac. In such a case, you can correct the clock on your Mac manually by following the steps below.
1. Click on the Apple icon in the top Menu bar on your Mac and then click on the System Preferences option in the drop-down menu.
2. On the System Preferences screen, click on Date & Time option.
3. On the Date & Time screen, first uncheck the option to Set Date and Time Automatically and then correct Date and Time Manually as required (See image below).
Allow Mac to Set Time Zone Automatically
In case you are a frequent traveler, you can configure your Mac to Set Time Zone Automatically by making use of Location Services. This option is suitable in case you travel frequently and you do not have any problem enabling Location Services on your device.
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1. Click on the Apple icon in the top Menu-bar on your Mac and then click on the System Preferences option in the drop-down menu.
2. On the System Preferences screen, click on Date & Time option.
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3. On the Date & Time screen, first click on the Time Zone tab and then enable Set Time Zone Automatically option (See image below).
4. You will next see a popup, informing you that Location Services are not enabled on your device. Click on Open Privacy Preferences… button.
5. On the Security & Privacy Screen, first Enable Location Services and then click on the Details… button located next to System Services (See image below).
6. On the next screen, Enable the option for Setting Time Zone and tap on Done.
With this setting, your Mac will be able to update Date and Time based on the location of your device. Whenever you cross time zones, your Mac will make use of Location Services to track your location and make use of an appropriate time zone to adjust Date and Time on your Mac.