Change how a date-time is written without inventing a new instant (unless zone rules apply).
Formula
Parse the timestamp, then reformat it for the selected date/time representation
Explanation
Parsing yields a structured date-time (and optionally a zone). Formatting emits ISO, locale, or custom patterns. Ambiguous local times near DST transitions need explicit zone rules.
Variables
inputsource timestamp string
output formattarget representation pattern
When to use
APIs, reports, and converting between ISO-8601 and locale displays.