Symbolic Dates & Times Mathematica Version 10 has a highly flexible system for representing dates and times symbolically and performing computations on them. In addition, the date framework handles all standard calendars, a wide range of date and time formats, time zone lookups, and date comparison functions. New date and time object representation. » Additional date operations and element extraction. » Automatic date arithmetic and comparisons. » Convert between different calendar systems. » Integrated astronomical calculations using symbolic time. » Symbolic dates with time zone conversion and location-based lookup. » Create Symbolic Date and Time Expressions » Calculate with Dates and Times » Calculate with Time Zones » Use Date Qualifiers in Data Queries » Extract Values from Dates and Times » Do Celestial Time Calculations » Use Dates in Astronomical Calculations » Filter Data by Date »