Time setting problems with ubuntu 24.04

Open a terminal (bash prompt); a window with a $ and a blinking cursor will appear...

So, do not type $ - that is "the prompt", to indicate what YOU are expected to type a command and arguments. The other lines comes as output from those 'commands'

Note: hit Enter at the end of each command

Now; this will display the terse help page for date:

$ date --help
Usage: date [OPTION]... [+FORMAT]
  or:  date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]
Display date and time in the given FORMAT.
With -s, or with [MMDDhhmm[[CC]YY][.ss]], set the date and time.

...

... the text beyond this tells a lot of detail.

Among that information you find that adding -s to the arguments will SET the time and date.

Also note that you are likely to need a sudo to do that successfully, as that writes into the hardware RTC (real time clock).

So a "sudo date -s [MMDDhhmm[[CC]YY][.ss]]" should do this: e.g.

$ sudo date -s 100410302024
for 2024-10-04@10:30.

Verify by a simple
$ date

to set the systemclock use ntpdate command that uses a pool of ntp servers in pool.ntp.org to set your time

sudo ntpdate pool.ntp.org

After this, you need to set the hardware clock to the recently synced system time using

sudo hwclock -w

To set the clock automatically you should use systemd-timesyncd.service

sudo systemctl enable systemd-timesyncd.service
sudo systemctl start systemd-timesyncd.service

then:

timedatectl set-ntp yes

It seems like the timezone database on your system may not have the correct or complete information, or the necessary timezone files might not be installed. Here's a step-by-step guide to troubleshoot and fix this issue:

1.Check if the time zone is installed: First, check if the tzdata package, which provides timezone information, is installed and up-to-date.

Run the following command:

sudo apt update

sudo apt install tzdata

This will ensure that the latest timezone data is installed.

2.List available time zones: Check if Europe/Berlin is listed among the available time zones:

timedatectl list-timezones | grep Europe

If Europe/Berlin is not listed, it means your system is missing the required timezone data or there’s an issue with the timezone database.

3.Manually reconfigure tzdata (if needed): You can also manually reconfigure the tzdata package to ensure the correct timezone files are installed:

sudo dpkg-reconfigure tzdata

During this process, you'll be prompted to select your region (e.g., Europe) and your city (e.g., Berlin).

4.Set the timezone again: Once you've verified that the timezone is available, try setting it again:

sudo timedatectl set-timezone Europe/Berlin

If everything is working properly, this command should now succeed without any error.

Let me know if the issue persists!