This Lit. Order. The festive meal conducted on Passover night, in a specific order with specific rituals to symbolize aspects of the Exodus from Egypt. It is conducted following the haggadah, a book for this purpose. The mystics of Sefat also created a seder for Tu B'shvat, the new year of the trees. was created to welcome in the shmita (Sabbatical) year.
Ever since the first breath of creation, time has unfolded in cycles of seven. Six days reach their crescendo in the seventh day, Shabbat—the Sabbath, the day of rest. Six years reach their crescendo in the seventh year, shmita—the sabbatical, the year of renewal. Seven cycles of seven years reach their crescendo in the Jubilee year, the ultimate enactment of re-creation.