Where to Find the Time Settings
The fastest way to change your computer's time depends on whether you use Windows or Mac. Both operating systems let you adjust the time from the system clock in the bottom right corner of your screen (Windows) or top right corner (Mac). You can also go deeper into settings if you need to change the time zone or turn off automatic time updates.
Your computer normally syncs its time with internet time servers automatically, so you rarely need to change it manually. But if your clock is wrong, your computer is offline, or you need to set a specific time for testing purposes, you can override the automatic setting in a few clicks.
Key Takeaways
- On Windows, right-click the clock in the bottom right corner and select "Adjust date and time" to open the settings panel directly.
- On Mac, click the clock in the top right corner, then select "Date & Time Preferences" to reach the full settings menu.
- Most computers automatically sync time with internet servers, so manual changes may revert unless you turn off automatic updates first.
- Changing the time zone is separate from changing the actual time and lives in the same settings panel on both systems.
- If your computer is offline, you can still change the time manually, but it will not stay accurate until you reconnect to the internet.
Changing the Time on Windows 11 and Windows 10
Right-click the clock in the bottom right corner of your taskbar. A small menu will appear with several options. Click "Adjust date and time" to open the Settings app directly to the time panel. This is faster than hunting through the Settings menu manually.
In the Settings window, you will see a toggle labeled "Set time automatically." If this toggle is on (blue), your computer is syncing with an internet time server and will ignore any manual changes you make. Turn this toggle off first. Once it is off, a new button labeled "Change" will appear below it. Click "Change" to open a small dialog where you can type in the new time and date. Enter the time in the format shown (usually hours, minutes, and seconds), then click "Change" again to save it.
After you have set the time, you can turn the automatic sync back on if you want. Your computer will keep the time you entered and sync forward from there. If you leave automatic sync off, your clock will drift slowly over days or weeks, so turning it back on is usually the right choice once you are done.
Changing the Time on Mac
Click the clock in the top right corner of your menu bar. A dropdown menu will appear showing the current date and time. At the bottom of this menu, click "Date & Time Preferences" to open the full settings panel.
In the Date & Time window, you will see a lock icon in the bottom left corner. Click this lock and enter your Mac password to unlock the settings. Once unlocked, uncheck the box labeled "Set date and time automatically." This turns off the automatic sync so you can make manual changes. With automatic sync off, the date and time fields become editable. Click in the time field and type the new time, or use the up and down arrows to adjust it. Do the same for the date if needed.
Once you have entered the correct time, close the window. Your Mac will keep the time you set. Like Windows, you should turn automatic sync back on once you are finished, because your clock will slowly lose accuracy without it. To re-enable automatic sync, open Date & Time Preferences again, unlock the settings, and check the "Set date and time automatically" box.
Changing Your Time Zone
If you moved to a new time zone or your computer is showing the wrong time because it is set to the wrong zone, you can change the zone without touching the actual time. On Windows, the time zone setting is in the same Settings panel where you change the time. Scroll down to find "Time zone" and click the dropdown to see a list of all available zones. Select the one that matches your location.
On Mac, the time zone setting is also in Date & Time Preferences. Look for a dropdown labeled "Time zone" and select your location from the list. If you have "Set date and time automatically" turned on, your Mac will update the time automatically once you change the zone. If automatic sync is off, you may need to adjust the time manually as well to match the new zone.
What Happens When Your Computer Is Offline
If your computer is not connected to the internet, you can still change the time manually using the same steps above. However, your computer will not be able to sync with internet time servers, so the clock will start to drift as soon as you set it. The longer your computer stays offline, the less accurate the time becomes.
Once you reconnect to the internet and turn automatic sync back on, your computer will correct itself to the accurate time within a few minutes. This is why leaving automatic sync enabled is usually the best choice—it keeps your clock accurate without any effort on your part.
Common Mistakes to Avoid
The most common mistake is forgetting to turn off automatic time sync before trying to change the time. If you change the time but it when ready reverts to the correct time, automatic sync is still on. Go back to the time settings, turn off the automatic sync toggle, and try again.
Another mistake is confusing time zone changes with time changes. If you move to a new time zone and your computer is set to sync automatically, the time will update on its own once you change the zone setting. You do not need to manually adjust the time as well. Changing both can result in your clock being off by an hour or more.
A third mistake is leaving automatic sync turned off permanently. This is fine for a few hours if you are testing something, but over days or weeks your clock will become noticeably inaccurate. Make a habit of turning automatic sync back on once you have finished what you needed to do.
Frequently Asked Questions
Why does my computer time keep changing back to the correct time?
Your automatic time sync is still turned on. Go to your time settings, find the toggle for automatic sync, and turn it off. Once it is off, your manual time change will stick. Remember to turn automatic sync back on when you are finished.
Can I change the time on my computer if it is not connected to the internet?
Yes, you can change the time manually even when offline. However, without an internet connection, your computer cannot sync with time servers, so the clock will slowly drift. Once you reconnect to the internet, turn automatic sync back on and your computer will correct itself within a few minutes.
What is the difference between changing the time and changing the time zone?
The time zone is your geographic location; the time is the actual hour and minute. If you move from New York to Los Angeles, you change the time zone. If your clock shows 3 p.m. but it is actually 2 p.m., you change the time. Changing the zone automatically updates the time if automatic sync is on.
Will changing the time affect my files or programs?
Changing the time can affect file timestamps and programs that rely on accurate time, such as backup software or security tools. For this reason, avoid leaving the time set incorrectly for long periods. If you are testing something that requires a specific time, change it back as soon as you are done.
How often should I manually check my computer's time?
If automatic sync is turned on, you do not need to check it. Your computer will stay accurate on its own. If you have turned off automatic sync for testing, check the time every few days and turn automatic sync back on as soon as you no longer need the manual setting.