The easiest way to determine what date JAMS is seeing when users use 'Natural Language Specification' in the scheduled date is to use the JAMS commandlet: Convertto-Date.
By simply pulling up a Powershell CLI window, importing the JAMS module, and using the commandlet users can easily find out what date is being used:
#Import the JAMS Module 'Convertto-Date' is a part of the JAMS commandlet list. Import-Module JAMS #Use Convertto-Date and put the language specification in quotes. Convertto-Date "Last Monday of Month" #Help reveals that we can also evaluate the date using additional methods Help Convertto-Date #We can evaluate the date based on a custom date as if that date was 'Today' Convertto-date "Last Monday of Month" -Today 01/01/2013 #We can evaluate the date based on a custom start date in our calendar year. Convertto-date "Last Monday of Month" -StartDate 01/01/2014