April 16

Of the new Obligatory Prayers that were later revealed, the long Obligatory Prayer should be said at those times when one feeleth himself in a prayerful mood. In truth, it hath been revealed in such wise that if it be recited to a rock, that rock would stir and speak forth; and if it be recited to a mountain, that mountain would move and flow. Well is it with the one who reciteth it and fulfilleth God's precepts. Whichever prayer is read will suffice. (Baha’u’llah, Compilation on ‘The Importance of Obligatory Prayer and Fasting’, prepared by Research Department of the Universal House of Justice)