Interactive calendar interface for defining and displaying date ranges

A method for specifying an event range comprising:

• providing an interface for users to specify event ranges, each event range comprising a start date that chronologically precedes an end date;
• receiving a series of dates associated with an event;
• setting two dates of the dates in the series of dates as a start date and an end date for an event range based on a chronological relationship between the two dates, with the date from the series set as the start date being chronologically earlier than the date from the series that is set as the end date;
• and
• presenting information reflecting the event range.

A method for specifying an event range, comprising:

• setting a first date and a second date as a start date and an end date for an event range based on a chronologically relationship between the first date and second date;
• presenting information reflecting the event range;
• and
• enabling a user to modify the presented information by selecting a third date, wherein the third date is set as a new start date for the event range when the third date either precedes the set start date of the event range or when the third date falls within the event range, and the set start date was received before the set end date, and wherein the third date is set as a new end date for the event range when the third date succeeds the set end date of the event range or when the third date falls within the event range and the set end date was received before set start date.