Long Date Format
From AgileApps Support Wiki
Resources in APIs that apply Date or DateTime values use a Long Date Format, which is different from theMM-DD-YYYY date patterns described in the UI.
Long Date Format is based on the Java class Date, which is defined as the number of milliseconds since January 1, 1970, 00:00:00 GMT.
This Long Date Format encodes dates and times as a number, which can then be applied to complex filters and formulas in the AgileApps Cloud platform.
- Example
<someDate>1228457520000</someDate>