Celebrating the life and scientific contributionsof Donald Knuth on January 10, 2018 withtwo connected events, both in Pite\xe5, Sweden.

• January 8-10 (Monday-Wednesday morning): The scientific symposium "Knuth80: Algorithms, Combinatorics, and Information" in honor of Don\u2019s career-long efforts that have inspired us all. Don\u2019s interests and accomplishments are very broad, and the symposium will therefore include contributions from distinguished scientists in several areas where Don\u2019s influence has been important.
  \tSee Program and Confirmed speakers
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• January 10, afternoon (Wednesday): The world premiere of Fantasia Apocalytica , a multimedia work for pipe organ and video that Don has written. It will be performed by the Canadian organist Jan Overduin on the magnificent new pipe organ in Studio Acusticum in Pite\xe5.
  \tSee Fantasia Apocalyptica .