toiso8601timestamp
toiso8601timestamp is a common name for a utility function, method, or library routine that converts a date-time value into an ISO 8601 compliant timestamp string. The function is designed to produce a canonical, machine-readable representation of a point in time for purposes such as storage, logging, and data interchange.
The input typically accepts a range of date-time representations, including Unix epoch seconds or milliseconds, language-native
The output is a textual timestamp in ISO 8601 form. The standard appearance is YYYY-MM-DDTHH:MM:SS with an
Notes: Variants exist across languages and libraries regarding precision, presence of fractional seconds, and default time