https://www.commandlinefu.com/commands/view/10168/change-time-format-in-log-unix-timestamp-to-human-readable
Change time format in log, UNIX Timestamp to Human readable Using awk, sed
change time formatunix timestamploghumanreadable
https://forums.opera.com/topic/71025/change-time-format/2?lang=en-US
Change Time Format | Opera forums
May 7, 2025 - @huatu-huatu There isn't. Opera should follow the system settings.
change time formatopera forums