Extended Date/Time Format is particularly useful for entering date ranges or dates with varying precision. Many data visualization and analysis tools, though, like well-behaved, precise dates. This tool accepts a list of EDTF-formatted strings (one per line) and returns the earliest and latest exact dates implied by the original EDTF string.
I wrote a short blog post about this tool with some further examples.
Summary: values parsed, blanks skipped, errors encountered.
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