How do I apply date range filters in common query language using predicate like DURING
Temporal predicates specify the relationship of a time-valued expression to a time or time period. The syntax is:
Expression DURING Time Period
Describe - Tests whether a time value is during a time period
for eg :
ts DURING 2016-02-26T00:00:00.000Z / 2017-02-27T23:59:59.999Z
where "ts"is time expression(or key name holding datetime value)
for more information on duration based queries for Temporal Predicate refer the following link http://docs.geoserver.org/latest/en/user/filter/ecql_reference.html#temporal-predicate