Calendar:Import Export
Calendar can import data in iCalendar (iCal) and Comma Separated Value (CSV) formats. Exporting is additionally possible in Hypertext Markup Language (HTML).
iCalendar
Recommended format for data exchange.
Comma Separated Value
CSV import and export is optimized for collaborating with Outlook which can't handle the iCal format in the necessary extent. CSV offers an easy way to exchange data with spreadsheets or word processors.
Currently Calendar needs "well formed" CSV files. The first line should contain the header names. Each header name and each data field has to be enclosed in double quotes. Data fields need to be separated with commas.
Effective as of version 0.8: Mandatory are the two fields "Subject" and "Start Date" only. Recommended date format is YYYY-MM-DD with a four digit year at the beginning. Time format should be HH:MM:SS with 24-hour values. Calendar will also understand dates and times in the locale scheme of the operating system but data format must not change within a file.
The universal indicators AM, a.m., PM and p.m are always recognized.
Sample CSV file
"Subject","Start Date"
"Berlin Wall came down","1989-11-09"
Hypertext Markup Language
HTML export gives an event list with the todo items on top of that list.