During the period of the later Qajar shahs, namely Muzaffar al-Din (r. 1896–1907) , Muhammad-'Ali (r. 1907–9) and Ahmad (r. 1909–25) , the Iranian state became steadily weaker and sank into anarchy as a result of years of revolution, war, corruption, injustice, insecurity, and foreign intervention and occupation, all of which took a heavy toll on the local population. The country was thoroughly disappointed with the outcome of its hard-won freedom, the incompetence of successive cabinets, the inefficiency of the shahs, and the corruption of the bureaucracy. The continuous interference of foreign powers in Iran's affairs, especially Britain and Russia, combined with their excessive consular rights were a constant source of national humiliation and impotent dissension, which by 1921 had turned into loud, nationalistic protests throughout the country. The people looked for a strong government that would overcome these weaknesses. [The Forgotten Schools: The Bahá'ís and Modern Education in Iran, 1899–1934 p107]

Try also a shorter date like or 1925-12 or 1925-1

try also the Chronology Canada — 1925-12-1 or 1925-12 or 1925-1