Hah, you think normal date math is bad, try dealing with the various calendars used in finance. US 30/360, Euro 30/360, Actual/365, Actual/360, etc, etc. That

Hah, you think normal date math is bad, try dealing with the various calendars used in finance. US 30/360, Euro 30/360, Actual/365, Actual/360, etc, etc. That stuff will make you tear your hair out.