January. Veganuary
February, first weekend.FOSDEM.
February 14. I Love Free Software Day.
March, last Wednesday. Document Freedom Day.
May 15. Straw Hat Day.
June. LGBT Pride Month.
September 1. International Primate Day.
September 15. Felt Hat Day.
September, 3rd Saturday. Software Freedom Day.
September 27. GNU Anniversary.
October 1. World Vegetarian Day/Month.
October 11. National Coming Out Day.
November 1. World Vegan Day/Month.
December. International Day Against DRM.
December 10. International Animal Rights Day.
December 15. Zamenhof Day.
December 25. Grav-mass.