A much less onerous solution is to get one of the free programs which updates the time clock each time that you connect to the Internet. These are all very simple to use and instructions are included. When setting them up, arrange to have the program grab the time only once and then remove itself from memory. If you are a time freak, then you can instruct the program to connect at regular intervals. While the data comes from very high precision timing devices, there may be a delay of a couple of seconds to update your internal clock.
Some programs can compensate for that.
There is also a Freeware program called SpeakClock which announces the time on the loudspeaker every hour, or whenever you click on its icon in the tray. This can be used as a sneaky reminder for pesky visitors who have worn out their welcome. On the other hand, the program uses up some memory resources. When you are tired of it, remove the shortcut from the StartUp folder. I have messed around a great deal with my Windows 98 computer, and many things have gone wrong.