February 25

As to your question relative to the last Nineteen Day Feast, Shoghi Effendi sees no objection if the friends choose to celebrate it on one of the intercalary days. They may also celebrate it during the month of fasting, provided they abstain from food. (In a letter written on behalf of Shoghi Effendi, 2 August 1934 to an individual believer; The Compilation of Compilations, vol. I, The Nineteen Day Feast)