Options for generating and parsing ISO 8601 date representations. See
NSISO8601Date for possible values.
- iOS 10.0+
- macOS 10.12+
- tvOS 10.0+
- watchOS 3.0+
The ISO 8601 specification allows for dates to be expressed in a variety of ways. You can configure the format used to parse and generate representations by specifying various combinations of format options.
Date with dash separators
RFC 3339 Date and Time
Date and Time with space separator between date and time
Week of Year
Week of Year with Ordinal Weekday
Ordinal Day of Year