As regards various matters you raised in your letters, the
reason we commemorate the 1st, 9th and 12th days of Ridván as Holidays (Holy
Days) is because one is the first day, one is the last day, and the third one
is the ninth day, which of course is associated with the number 9. All 12 days
could not be holidays, therefore these three were chosen.
(Letter written on
behalf of the Guardian, dated June 8, 1952, to an individual believer;
compilation: ‘Lights of Guidance’)
