Not a dual boot.
timedatectl
Local time: Wed 2021-10-13 08:37:56 IST
Universal time: Wed 2021-10-13 07:37:56 UTC
RTC time: Wed 2021-10-13 08:37:56
Time zone: Europe/Dublin (IST, +0100)
System clock synchronized: yes
NTP service: active
RTC in local TZ: yes
Warning: The system is configured to read the RTC time in the local time zone.
This mode cannot be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
I use the command 'timedatectl set-local-rtc 0' as suggested above and that fixed the problem.
-----Original Message-----
From: Markus Falb <wnefal@xxxxxxxxx<mailto:Markus%20Falb%20%3cwnefal@xxxxxxxxx%3e>>
Reply-To: CentOS mailing list <centos@xxxxxxxxxx<mailto:CentOS%20mailing%20list%20%3ccentos@xxxxxxxxxx%3e>>
To: CentOS mailing list <centos@xxxxxxxxxx<mailto:CentOS%20mailing%20list%20%3ccentos@xxxxxxxxxx%3e>>
Subject: Re: Boot time in wtmp is not correct
Date: Wed, 13 Oct 2021 00:36:13 +0200
Mailer: Apple Mail (2.3608.120.23.2.7)
[EXTERNAL] This email was sent from outside of UCC.
On 12.10.2021, at 17:41, Hooton, Gerard <
<mailto:g.hooton@xxxxxx>
g.hooton@xxxxxx
> wrote:
When I do who -b; uptime I get
system boot 2021-10-12 17:05
16:36:09 up 30 min, 1 user, load average: 0.00, 0.00, 0.00
As you can see the boot time reported by the last command is ahead.
I have noted it is one hour ahead after a reboot.
I have checked the system time in the BIOS before booting Linux and it is correct.
What do you mean with “correct”? UTC or localtime?
For me timedatectl gives me
```
$ timedatectl
…
RTC in local TZ: no
…
```
Which means that RTC/BIOS clock is in UTC, so when booting the timezone offset
is added. I heard that dual boot with Windows makes
problems because Windows is setting RTC always with local time. In
that case try "RTC in local TZ: yes"
Do you dualboot? What is timedatectl telling you?
Best Regards, Markus
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Gerard Hooton.
Senior Technical Officer
School of Engineering.
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