Yup, I ended up looking at the original data, which fortunately are also available. It's a CLI where user can specify the argument YYYYMMDD or YYYYMMDDTHH:MM:SS which will be coerced by the CLI framework into a DateTime before being passed to the subroutine. The coercion might be able to accept 'today' (no time-of-day elements) or 'now' (has time-of-day elements) or other formats in the future, but I think I'm okay for now, thanks.

In reply to Re^2: Detecting whether DateTime object has a time component or not? (updated) by perlancar
in thread Detecting whether DateTime object has a time component or not? by perlancar

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