to_iso8601

Converts this into an RFC 3339 encoded string, relative to the Coordinated Universal Time (UTC).

This is one of the many formats allowed by ISO 8601.

ISO 8601 allows a large number of date/time formats, with or without punctuation and optional elements. The format returned by this function is a complete date and time, with optional punctuation included, the UTC time zone represented as "Z", and the tv_usec part included if and only if it is nonzero, i.e. either "YYYY-MM-DDTHH:MM:SSZ" or "YYYY-MM-DDTHH:MM:SS.fffffZ".

This corresponds to the Internet date/time format defined by RFC 3339, and to either of the two most-precise formats defined by the W3C Note Date and Time Formats. Both of these documents are profiles of ISO 8601.

Use format or to_string if a different variation of ISO 8601 format is required.

Parameters:

this

a TimeVal

Returns:

a newly allocated string containing an ISO 8601 date