An application should reject anything not in its expected format. I would not want to be boxed into the limits of the configuration format's date and time repre

An application should reject anything not in its expected format. I would not want to be boxed into the limits of the configuration format's date and time representations. For example, TOML accepts datetimes with fixed offset time zones, but not time zone designators with multiple offsets, like America/New_York.