Last year was this:

* Feb 27th:	Calls for tutorial submissions
* Apr  8th:	Tutorial submissions due 
* May  1st:	Speaker and Schedule announced
* May  6th:	Early registration ends
* May 24th: Final submission of tutorial materials, software version 
  numbers and test scripts.
* Monday-Tuesday, June 24 - 25: SciPy 2013 Tutorials, Austin TX
* Wednesday-Thursday, June 26 - 27: SciPy 2013 Conference, Austin TX
* Friday-Saturday, June 27 - 28: SciPy 2013 Sprints, Austin TX & remote

This year the conference starts 12 days later - should we just add two weeks to every date and call it good?