In Sri Aurobindo's yoga there are no fixed kriyas though there is nothing against any kriyas as individual disciple finds it helpful or necessary at a given stage of his progress.
The answer to the question of everything being fated and predetermined or tied to a link of cause and effect it, depends upon what vantage point we look at it. Both are true!
Let us spend this day and the days to come with this single will, single occupation, single aspiration that may all in us be given to him for his work, in love and with love for him who gave himself so completely for us.
What really is the mystery of 5th December 1950, the day of Sri Aurobindo’s withdrawal or Mahasamadhi as it is called? Words often fail when we speak of anything related to Sri Aurobindo, - the Mystery of Mysteries that he remains.
This day marks a definitive turning point not only in Sri Aurobindo’s personal sadhana or the history of the Ashram but even more so in the history of the earth.