* 2024-03-06 12:31:46-0500, Roy J. Tellason, Sr. wrote:
> Local time: Wed 2024-03-06 12:09:44 EST
> Universal time: Wed 2024-03-06 17:09:44 UTC
> RTC time: Wed 2024-03-06 17:20:53
> Time zone: America/New_York (EST, -0500)
> Network time on: yes
> NTP synchronized: no
> RTC in local TZ: no
>
> How do I get the RTC to agree with the right time? I don't reboot this
> often, but when I do the time displayed on the onscreen clock is
> typically off by several minutes.
RTC is the clock on computer's motherboard. It has battery and it can
keep time when the computer is off. That's its purpose. When computer is
shut down the operating system saves its time to RTC. When computer is
booted operating system reads RTC time and sets operating system's
clock. The time is not accurate but at very least it's something instead
of random time. When operating system is running RTC does not matter
anymore.
To get operating system's clock have accurate time it needs to be
synchronized with network time servers via network time protocol (NTP).
Systemd has that feature. Turn in on with
sudo timedatectl set-ntp true
--
/// Teemu Likonen - .-.. https://www.iki.fi/tlikonen/
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