The czar assigments are maintained on a Google calendar. The program tools/czarcal may be used to create an iCalendar file that can be imported to Google.

dolphin:~> czarcal
usage: czarcal <first czar> <start_date> <num assignments>
  czar list: mark gene bill roy serge heather chris

Example:
czarcal mark 20111104 30 > novczars.ical

To import to Google select the "Import Calendar" item on the pull down menu labeled "Other calendars" on the left.