Date and time algebra

Problem. You want to know what will be the weekday name of the day 1000 day in the future from now.

Solution. Cuis has a class Duration and is capable of doing dates algebra.

((DateAndTime now) + (Duration days: 1000)) dayOfWeekName .       "=> #Saturday "

Exercise. Explore the classes DateAndTime, Duration and what is nearby in the Browser.

Exercise. Find the distance in hours between your birth date and your mother's.