1222
 February 16
 Founder Nichiren Daishonin born in Kataumi in the province of Awa.(present-day Kamogawa City, Chiba Prefecture)
1253
April 28
 Nichiren Daishonin declares the establishment of True Buddhism at Seicho-ji temple in Awa.
1279
October 12
 Nichiren Daishonin inscribes the Dai-Gohonzon of the High Sanctuary of Honmon Teaching.
1282
September
 Nichiren Daishonin transfers all of Buddhism to Nikko Shonin with the conferral of "The Entrustment of the Law that Nichiren Propagated throughout His Life," designates him as His sole legitimate successor and appoints him the Great Master of Propagation of the Honmon Teaching.
1282
October 13
 Nichiren Daishonin writes "Minobu Sojo Sho" (Minobu Transfer Document) to Nikko Shonin and appoints him as the Head Priest of Minobu-zan Kuon-ji temple.
1282
October 13
 Nichiren Daishonin passes away peacefully at the residence of Ikegami Munenaka.
1282
October 25
 The second High Priest Nikko Shonin returns to Mt. Minobu with the ashes of his beloved master.
1289
Spring
 Nikko Shonin leaves Mt. Minobu as the result of Lord Hagiri Sanenaga's mounting acts of slander. Nikko Shonin arrives at Lord Nanjo Tokimitsu's estate at Fuji Uenogo.
1290
October 12
 Nikko Shonin establishes Taisekiji, the Head Temple of Nichiren Shoshu.
1332
November 10
 Nikko Shonin gives Nichimoku Shonin a transfer document entitled "Nikko Ato Jojo no Koto" (Articles to Be Observed after Nikko's Death), officially designating him as the third High Priest, the Great Master of Propagation of the True Law.
1333
 February 7
 Nikko Shonin passes away peacefully at Omosu Seminary.
1333
October
 The third High Priest Nichimoku Shonin transfers the entirety of the Law to Nichido Shonin.
1333
November 15
 Nichimoku Shonin dies en route to Kyoto, at Tarui in Mino Province.

 Since that time onward, the Buddhism of Nichiren Daishonin has been transmitted down through the ages in the form of the Heritage of the Entity of the Law, entrusted to one and only one legitimate successor, from one High Priest to the next.

 In turn each of the successive High Priests has carried out the tranmission of the Law in the exact same manner as one drop of water in a vessel transferred to another vessel, and has continued to burn brightly the "torch of the Law," unbroken and uninterrupted to this day, which has been inherited by the 68th High Priest Nichinyo Shonin.