Definition: It's a file that specifies the NTP server to use for time synchronization on the user's NT account, including timezone information. This setting can be useful in updating clock settings if they differ between devices running different OSes or when using hardware clocks (like clocked by an external device). Detailed definition: it defines what type of NTP (Network Time Protocol) server will be used to synchronize time on the user's computer account, including any timezone information.