Five key dates define the timeline for implementation of the JCPOA:
The day that the agreement was concluded and announced (Annex V, Section A)
“90 days after the endorsement of the JCPOA by the UN Security Council,” which occurred on July 20, 2015 (Annex V, Section B)
Conditional on “the IAEA-verified implementation by Iran” of certain initial agreed-upon measures (but not upon a final IAEA report or resolution of any aspects of its disputes with Iran) (Annex V, Section C)
“8 years from Adoption Day” or on a report by the IAEA stating that Iran is in compliance with the terms of the agreement, “whichever is earlier.” (Annex V, Section D)
“10 years from Adoption Day.” (Annex V, Section E)