Final answer:
12 September 2014 is an important date in Ismaili History because it marked the day Mawlana Hazar Imam assumed the Imamat.
Step-by-step explanation:
The Ismailis are a Shia Muslim community, and the Imamat is the leadership position in their religious community. Mawlana Hazar Imam is the title given to the spiritual leader of the Ismailis. The information provided is specific to Ismaili history, and as of my last knowledge update in January 2022, I don't have the specific details for events occurring after that date.
Therefore, I cannot confirm the accuracy of information related to events on September 12, 2014. To obtain the most accurate and up-to-date information about Ismaili history, including events on that date, it is recommended to refer to official Ismaili sources, publications, or reach out to the Ismaili community for accurate details.