Argh. Cannot let this go. Sorry for my stubbornness, but I have a really hard time changing to something I feel is not better than it was ;)

For a calendar, it's not a unit. It's a *field*. See for example how postgresql documents their function:http://www.postgresql.org/docs/9.1/static/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC
or, java.util.Calendar...

Sorry for beintg