Common Data Types

The API types MUST adhere to the formats defined below:

Data type	Standard	Example
Date and Time	ISO 8601	2017-06-21T14:07:17Z (Always use UTC)
Date	ISO 8601	2017-06-21
Duration	ISO 8601	P3Y6M4DT12H30M5S
Time interval	ISO 8601	2007-03-01T13:00:00Z/2008-05-11T15:30:00Z
Timestamps	ISO 8601	2017-01-01T12:00:00Z
Language Codes	ISO 639	en <-> English
Country Code	ISO 3166-1 alpha-2	DE <-> Germany
Currency	ISO 4217	EUR <-> Euro