[rules-users] Custom dates with @date-effective and @date-expires

Hi, Can I use any arbitrary date for the drools execution so that correct rules are fired based on not current date but any arbitrary date? This is in the context of @date-effective and @date-expires metadata that can be specified as part of a rule. Drools expert documentation seems to imply that this metadata uses "current date" though I am not clear what current date (system date?) means. Thanks Faisal Shafique