Update Ubuntu Dependencies

In the SSH command prompt window, enter the following command to download updates list (you will need to enter the Root password):

sudo apt update

Then this command to install all of them:

sudo apt full-upgrade

Then remove not needed dependencies (one command at a time):

sudo apt remove --purge tailscale
sudo apt autoremove
sudo rm /etc/apt/sources.list.d/tailscale.list
sudo rm /usr/share/keyrings/tailscale-archive-keyring.gpg
sudo rm -rf /var/cache/tailscale
sudo apt autoclean
sudo apt clean

And this command to reboot:

sudo reboot

You should now Change Timezone.