Event date

The date of an event to which the product is related. Optional and non-repeating.

Format	As specified by the value in the dateformat attribute, or the default of YYYY if the attribute is missing. Note that the dateformat attribute allows exact dates to be supplied if necessary, including the cases where an event spreads over a range of dates or the date can only be supplied as a text string
ReferenceName	<EventDate>
ShortTag	<x520>
Cardinality	0…1
Example	2015113020151215