If you need a convenient way of doing date-time calculation, like
"give me the last day of previous month" or "add 60 days from yesterday"
or "what is the time of now, but in PST".
Primarily it's intended to be used in scripts, i.e., command-line usage.
However, it can aloso be used as a high-level facad to do calendar computation.
You can use text expression using the parser or create cascading mehtod
invocations directely.
DateCalc
