I changed my time zone recently but can't recall which day. Is there a way to know what is the date that I changed my time zone?
For systemd based distros:
journalctl | grep systemd-timedatedwill show all the timezone changes granted the logs are still there
For distros similar to Fedora and Arch running
ls -l /etc/localtimecould show the date the file was last modified. Ubuntu and Debian based distros use