With the release of PolyAnalyst 6.0.570, PolyAnalyst’s Symbolic Rule Language (SRL) now supports a new function: DateDiff. Previously, calculating the difference between dates was burdensome because it required converting two dates into numbers, and then subtracting one from the other. With the new function, calculating the amount of time elapsed between two dates no longer requires the initial conversion. Instead the difference can be calculated directly from the date values themselves. We expect this will lead to terser SRL expressions that are more readable and intuitive at first glance.