SYSTEM FOR CALCULATING OCCASION DATES AND CONVERTING BETWEEN DIFFERENT CALENDAR SYSTEMS, AND INTELLIGENT AGENT FOR USING SAME

摘要

An occasion database and a date converter are provided in a device which allows a user to retrieve restored occasion information (78), whether the occasion occurs in the Gregorian calendar (106) or a non-Gregorian calendar (112). A formula is stored for each occasion to allow its date to be calculated for any given year. The date converter converts between Gregorian and non-Gregorian dates. Conversions from one non-Gregorian calendar to another non-Gregorian calendar may also be performed. An intelligent agent executes date sensitive tasks by using at least one calendar and date calculation module for providing date information necessary to execute the date sensitive tasks. The tasks may be executed at a future time and on a periodic basis. Periodic tasks may be associated with occasions that occur in the Gregorian or non-Gregorian calendar.