KA07 RTC Shield

I downloaded the lib from your website site for my RTC KA07,
everything work so far but, one problem is still remaining.

The clock is ten minutes late.

Even with this :
rtc.adjust(DateTime(F(DATE), F(TIME)));

How can I adjust the time ?

This command need only be executed once.
Program the shield once with the adjust function enabled.
The next time remove it from the program.
Otherwise each time you power the arduino it will write the time when you compiled the firmware to the shield.