This talk will discuss date handling issues using localtime(), gmtime(), etc. Basic date calculations will be discussed, such as determining when yesterday was regardless of any daylight savings time rollovers, first monday of the month/year, etc.
Perl Modules like Date::Manip and Date::Calc will be discussed and compared to each other. Yet another date module (which will most likely be called Calendar::Civil or Calendar::Standard) will be discussed, which will deal with specific calendaring issues, such as calculating easter, solstices, and week number. Conversions to other calendars, such as the ISO calendar, French Revolutionary Calendar and possibly the Hebrew calendar will be discussed.
In order to keep this talk interesting to a general audience, algorithms
to calculate these phenomena will be alluded tu but not described in any
great detail. Simple date math based on interval counting will also
be discussed, but not in any great detail. Conversions to swatch
internet time will also be mentioned briefly.