Amazon Services
Amazon Marketplace Web Service (Amazon MWS) Documentation

Deprecation Notice:

Amazon Marketplace Web Service (MWS) will no longer be available after March 31, 2024. All MWS developers must migrate to Selling Partner API (SP-API) to avoid service disruptions. Refer to the Migration Hub for more information.

Amazon MWS Documentation

ISO 8601 use in Amazon MWS

Amazon Marketplace Web Service (Amazon MWS) formats date- and time-related data similar to the RFC 3339 standard, which defines a subset profile of ISO 8601 for use in Internet protocols and standards. This section will clarify just how you should format and use date and time data in Amazon MWS.

Type DateTime

All date and time data is expressed as calendar dates (year, month, day) and a 24-hour day. Day and time data is always expressed in a combined format. No truncated formats are allowed. Dates are based on the Gregorian calendar. All date and time data is expressed numerically, leading zeros are preserved.

The basic type DateTime string patterns are yyyy-MM-ddTHH:mm:ss.sssZ (for UTC) or yyyy-MM-ddTHH:mm:ss.sss±hh:mm (for a local time offset). The character 'T' is a required delimiter between the date and time sections. Times are expressed in the extended format: the ':' is used as a delimiter between hours, minutes and seconds. Fractional seconds are expressed with a decimal mark ('.' or ',') when needed.

Type conflicts

All use of date and time data in Amazon MWS should be expressed as type DateTime. However, there are a few parameters that express date or time as a simple string. Check the parameter type definition to be sure of which type to use. Using the wrong type will generate an error.

Time intervals

While time intervals and durations are allowed under ISO 8601, they are not currently used in Amazon MWS.



This example is read as the 16th day of March in 2016 at 14hrs 32min and 16.50 seconds local time. The local time is 7 hours behind UTC.