1. A method for generating and transmitting a calendar of different legal events capable of occurring in the course of a legal proceeding, the method comprising: maintaining in a database at least one rule set including a plurality of date calculation instructions for calculating a plurality of different legal events; receiving, under control of a server, an initial trigger date for an initial trigger legal event; selecting, under control of the server, one or more date calculation instructions from the database based on the initial trigger legal event; calculating, under control of the server, one or more event dates based on the initial trigger date and the retrieved date calculation instructions; transmitting, under control of the server, the one or more calculated event dates to a user client; maintaining, under control of the server, a transaction record of the one or more date calculation instructions used for generating the one or more event dates for the user client; monitoring, under control of the server, a changes table for changes in the plurality of date calculation instructions, the changes table identifying the changed date calculation instructions; automatically determining, under control of the server, whether the one or more date calculation instructions identified in the record are identified in the changes table; for each one of the one or more date calculation instructions identified in the changes table, recalculating, under control of the server, the associated event date based on the change to the corresponding date calculation instruction; and transmitting, under control of the server, the recalculated one or more event dates to the user client.
5. The method of claim 1 further comprising: receiving, under control of the server, update information for updating the date calculation instructions identified in the changes table, the update information identifying a rule set affected by the update, and further identifying the update as an event maintenance update or a non-event maintenance update, the event maintenance update triggering the recalculation of the one or more event dates identified in the changes table.