Making own timer like the system clock using battery

[aewarnick]

Is there a way to do that? If so, are there any classes that can make it pretty easy to do and what are they?

[divil]

Can you be more specific?

[aewarnick]

Sorry. With my program I use the system time and date but it would create problems if I do that because the user can edit it. But if I made my own separate clock then the program would not get messed up. It would also be beneficial to read from the (binary clock from the internet?). But that it not of most importance.