Time

setFormat()

Time.setFormat, setFormat

Sets the format string that is the default value used by format().

Time.setFormat(TIME_FORMAT_ISO8601_FULL);

In more advanced cases, you can set the format to a static string that follows the same syntax as the strftime() function.

// custom formatting

Time.format(Time.now(), "Now it's %I:%M%p.");
// Now it's 03:21AM.