Windows XP provides a mechanism for hiding the clock in the Notification Area. You can hide the clock for a specific user or from all users of the Windows XP computer.

To hide the clock for the current user:

1. Copy / Paste the following to a HideClock.reg file:

REGEDIT4

\[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\]
"HideClock"=dword:00000001

2. Merge the HideClock.reg file with the user's registry or run regedit /s HideClock.reg.

3. The user must log off and log on for this setting to take effect.

To hide the clock for all users:

1. Copy / Paste the following to a HideClock.reg file:

REGEDIT4

\[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\]
"HideClock"=dword:00000001

2. Merge the HideClock.reg file with the registry or run regedit /s HideClock.reg.

3. You must restart Windows XP for this setting to take effect.

NOTE: See How do I hide all the items in the Windows XP Notification Area (System Tray)?