The Feast of Sultan is the Feast of Sovereignty, 19 January
19 January 1922 Shoghi Effendi wrote a letter to the Persian believers stating that he would soon establish the Universal House of Justice
He then called a number of well-known believers to the Holy Land in March 1922 for consultation. Among these was Avarih, who arrived late. Many of the believers, including Avarih, thought that Shoghi Effendi should call for the election of the Universal House of Justice immediately. However, it became apparent to Shoghi Effendi that the election of that body had to wait until such time as local and national spiritual assemblies could be formed in various countries and were fully functioning. But Avarih, dissatisfied with this decision, was still determined to press his point of view. (Adib Taherzadeh, The Child of the Covenant, p. 294)
19 January 1973 - Announcement of the Completion of the Synopsis and Codification of the Kitáb-i-Aqdas (The Universal House of Justice, Messages from the Universal House of Justice 1968-1973, p. 104)
2000 - Rúhíyyih Khánum passes, representing the last remnant of the family of Bahá’u’lláh who remained loyal to Shoghi Effendi and the Universal House of Justice.
On 19 January 2000, a message from the Universal House of Justice announced:
In the early hours of this morning, the soul of Amatu'l-Baha Ruhiyyih Khanum, beloved consort of Shoghi Effendi and the Bahá'í world's last remaining link with the family of 'Abdu'l-Bahá, was released from the limitations of this earthly existence.... Her twenty years of intimate association with Shoghi Effendi evoked from his pen such accolades as "my helpmate', 'my shield', 'my tireless collaborator in the arduous tasks I shoulder'...." (Commissioned by The Universal House of Justice, Century of Light, p. 142)