Jon Skeet's "The joys of date/time arithmetic" http://msmvps.com/blogs/jon_skeet/archive/2010/12/01/the-joys-of-date-time-arithmetic.aspx http://msmvps.com/blo

Jon Skeet's "The joys of date/time arithmetic" http://msmvps.com/blogs/jon_skeet/archive/2010/12/01/the-joys-of-date-time-arithmetic.aspx http://msmvps.com/blogs/jon_skeet/archive/2010/12/01/the-joy... His talk in London Dev Days 2009, also goes into problems you can have with dates and timezones (including Argentina's 2009 last minute time zone change back into not using daylight saving time). http://vimeo.com/7516539 http://vimeo.com/7516539