Field Definitions are Available Here
Collection
The ending data of the campaign.
2001-05-27T00:41:30.000Z
/Campaigns/Campaign/EndDate
/gmi:MI_Metadata/gmi:acquisitionInformation/gmi:MI_AcquisitionInformation/gmi:operation/gmi:MI_Operation/gmi:description/gco:CharacterString
Temporal Information (ECHO)