Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).Would you like to answer one of these unanswered questions instead?After boot-up has completed, the system clock runs independently of the hardware clock.
The standard used by hardware clock (CMOS clock, the time that appears in BIOS) is defined by the operating system.
By default, Windows uses localtime, mac OS uses UTC, and UNIX-like operating systems vary.
For these operating systems, it is recommended to use localtime.
If you are using newer versions of Windows, you may safely disregard this warning.
It is calculated by the Linux kernel as the number of seconds since midnight January 1st 1970, UTC.
The initial value of the system clock is calculated from the hardware clock, dependent on the contents of .During kernel startup, at the point when the RTC driver is loaded, the system clock may be set from the hardware clock.Whether this occurs depends on the hardware platform, the version of the kernel and kernel build options.I have several applications that will not run correctly because my school laptop has the wrong date and time.I can not synchronize it to the internet because this requires admin rights.You can set the hardware clock time standard through the command line.