The quickest way to change your PC's time

The fastest way to change the time on your Windows PC is to click the clock in the bottom right corner of your screen, then click "Change date and time settings." From there, toggle off "Set time automatically" if it is on, then click the time field and type in the correct time. Windows will save the change when ready.

If you cannot see the clock on your taskbar, move your mouse to the very bottom right corner of the screen and wait a moment for it to appear. On some PCs, the clock is hidden until you hover over that area.

The entire process takes about 30 seconds. The time change applies to your whole system right away — you do not need to restart your PC.

Key Takeaways

  • Click the clock in the bottom right corner, then select "Change date and time settings" to open the time menu.
  • Turn off "Set time automatically" before you change the time, or Windows will override your change within minutes.
  • You can change the time zone separately from the clock time if you have moved to a different region.
  • If your PC keeps resetting the time after you change it, your system clock battery may be failing and needs replacement.

Step-by-step: changing the time through Settings

Open the Settings app by pressing the Windows key and typing "Settings," then press Enter. Click "Time & language" in the left sidebar. You will see a section called "Date & time" at the top of the page.

Look for the toggle labeled "Set time automatically." If it is blue and switched on, click it to turn it off. This is the most common reason a time change does not stick — Windows is overriding your manual change every few minutes by syncing with an internet time server.

Once "Set time automatically" is off, you will see a field that says "Set the time manually." Click inside that field and type the correct time in the format shown (usually HH:MM, where HH is the hour and MM is the minutes). Click outside the field or press Enter to save your change.

Changing your time zone without changing the clock

If you have moved to a different time zone and want Windows to adjust automatically, you do not need to change the time manually. Instead, go to Settings > Time & language > Date & time and scroll down to find "Time zone."

Click the dropdown menu under "Time zone" and select your region from the list. Windows will automatically calculate the correct time for that zone. This is much easier than typing in the time by hand, and it means your PC will adjust for daylight saving time automatically each year.

If you change the time zone but "Set time automatically" is still on, Windows will fetch the correct time for your new zone within a minute or two. You do not need to do anything else.

Why your PC time keeps resetting

If you change the time and it reverts back within a few minutes, the first thing to check is whether "Set time automatically" is still on. Go back to Settings > Time & language > Date & time and confirm the toggle is off. Sometimes the setting does not save on the first try.

If "Set time automatically" is definitely off and the time still resets, your PC's internal clock battery may be failing. This battery keeps the system time running even when your PC is unplugged. When it dies, Windows cannot hold onto the time you set. You will see the time jump back to an old date (often 2000 or 2005) every time you restart. A technician can replace this battery, but it is a hardware repair that requires opening the case.

A third possibility is that your PC is connected to a network domain (common in offices). Domain administrators can force time synchronization, and you may not have permission to change it yourself. If you are on a work PC, contact your IT department before trying to change the time.

Changing the time from the Command Prompt

If the Settings app is not working or you prefer typing commands, you can change the time using the Command Prompt. Press the Windows key, type "Command Prompt," right-click it, and select "Run as administrator." You must run it as administrator or the command will not work.

Type the command time HH:MM:SS where HH is the hour (00–23), MM is the minutes, and SS is the seconds. For example, to set the time to 2:30 PM and 45 seconds, type time 14:30:45 and press Enter. The Command Prompt will confirm the change when ready.

This method bypasses the Settings app entirely, which can be useful if Settings is frozen or slow. The time change takes effect right away, just as it does in Settings.

Syncing your time with an internet server

If your PC's time is off by more than a few minutes, the easiest fix is to turn "Set time automatically" back on and let Windows sync with an internet time server. This usually corrects the time within 30 seconds to a few minutes.

Go to Settings > Time & language > Date & time and toggle "Set time automatically" on. Windows will contact a time server (usually time.windows.com) and set your clock to match. You do not need to do anything else — the sync happens in the background.

If you want to force an when ready sync instead of waiting, you can restart your PC. Windows syncs the time during startup, so restarting is a quick way to update the clock right away. This is useful if you are about to join a video call or meeting and need the time to be exact.

Common mistakes to avoid

The most common mistake is forgetting to turn off "Set time automatically" before changing the time. If you set the time manually and then leave automatic sync on, Windows will override your change within a few minutes. Always check that the toggle is off before you type in a new time.

Another mistake is using the wrong time format. Windows expects 24-hour time (00:00 to 23:59), not 12-hour time with AM or PM. If you want to set the time to 3 PM, type 15:00, not 3:00. The Settings app usually shows you the format it expects, so read the label carefully.

Do not assume a time change requires a restart. Windows applies the change when ready, and you do not need to close any programs or restart your PC. If the time does not update right away, wait 10 seconds and check again — sometimes there is a slight delay before the clock display updates.

Frequently Asked Questions

Can I change the time on my PC if I do not have administrator rights?

No, you need administrator rights to change the system time. If you are on a work PC or a shared computer, contact the administrator or IT department. On a personal PC, you can create an administrator account if you have the password to the current admin account.

Will changing the time affect my files or programs?

Changing the time will not delete or damage your files. However, it can confuse programs that rely on accurate timestamps, such as backup software or email clients. If you change the time by more than a few hours, restart those programs after you make the change.

What if my PC time is correct but the clock display shows the wrong time?

This usually means your time zone setting is wrong. Go to Settings > Time & language > Date & time and check the "Time zone" dropdown. Select the correct zone for your location. The clock display should update within a minute.

Does changing the time affect my internet connection?

No, changing the system time does not affect your internet connection. However, some websites and programs may behave strangely if your PC time is very far off from the actual time. Keeping your clock accurate is a good practice for security and compatibility.

How do I change the time format from 24-hour to 12-hour?

Go to Settings > Time & language > Date & time, scroll down, and click "Change date and time formats." Under "Short time," select a format that shows AM or PM. This changes how the clock displays on your screen but does not affect how you enter the time in Settings.