A section about date and time in Debianguiden.dk

On my way to work I got a crazy thought. IIRC at least 3 questions about how to set time and date has been asked on the danish Debian help forum. This should be addressed with writing a section about how to set date and time on a Debian box. The section should contain a little info about date, rdate with cron and a third command to set the date (which I can’t remember the name of).

NOTE TO MYSELF: GET IT DONE!