Chronology (Cult of the Illuminated)

40,350 (350 years ago) the Cult of the Illuminated is recognised as an imperial cult thanks to the sponsorship of the Amaranth family.
40,390 (300 years ago) the Cult of the Illuminated are at the height of their influence.
40,415 (275 years ago) Magos Vulcan dies, donating his eyes to Cius Amaranth and the navigator of the Blessings of St. Gustavius.
40,440 (250 years ago) the Purge begins
40,465 (225 years ago) the Amaranth shrine in the basilica is sealed; Cius Amaranth flees
40,490 (200 years ago) Testament is purged.
40,698 (10 years ago) Gristus visits Testament
40,707.9 The acolytes uncover xeno taint on Syta (The Tainted Dream).
40,708.X The Blessings of St. Gustavius visits Xaladros
40,709.2 Gristus attempts to activate the Barque of St. Anbas (The Passing of the Barque of St. Anbas)
40,709.4 The Amaranth crypt is reopened. Thousands die in the riots that follow. (In The Crush of the Hive)
40,709.7 The acolytes visit San Valuso. (The Clockwork Moon
40,708.1 The acolytes arrive at Testament, then head to Constanthus. (Eye, Tooth & Claw.