In the Fatimid era, Navroz was celebrated by the Imams and later in history when the Imams lived in Iran, this holiday became an important Ismaili holiday.
“Morale and enthusiasm were kept up by the observance of various festivals of general Islamic nature; particularly those of Shia and Ismaili. Fridays and the two Idd days were the days of festivity. Moreover, the Shia festival of Idd-e-Ghadeer al-Khumm and the 10th of Muharram were also observed.
Birthdays of the Ahl-e-Bayt (the Prophet’s family) and the Imams and certain important dates of the year were celebrated. Imam took part in the celebrations of the festivals. Local festivals of secular origin, like the “Flooding of the Nile” and “Navroz” (beginning of spring) were also encouraged by the Imam. Imam al-Muiz would hold huge receptions at his palace; processions were taken through the town and the whole town was illuminated”.
Ismailimail 
The above is taken from a very comprehensive compilation of material written over many years by Nina Jaffer on her Ismaili Web website at amaana.org.
When we bought our first computer back in 1995 I discovered Nina’s Ismaili Web, which was already well under way, and I was enthralled and grateful that my children and I could learn about our tariqah on the internet.
All my thanks and gratitude to you Nina on this remarkable endeavour.
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Thank you, Nash, for your kind words. What goes around comes around. Now my children and many around the world are following your blog of knowledge and this is remarkable. For those of you who haven’t visited, please follow the link below to see what I mean:
https://ismailimail.wordpress.com/tag/easy-nash/
As Mowlana Hazar Imam quoted Al Kindi “Knowledge ennobles us all.”
Navroz Mubarak to all – may the recent downturn give us all an opportunity to connect with each other at a higher level and realize that we are all part of the Whole and that is why Jesus instructed us to love thy neighbor and Prophet Muhammad asked us to respect all religions as they all came from God…
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Nawroz mubarak and new year mubarak to all ismailis and to whom, who celebrates it.
Thanks
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Navroz Mubarak, everyone! Call it the act of God that I landed on this page as we prepare for Navroz celebrations starting with the new moon this Saturday, Chandraat and culminating in Navroz, Norouz, New Year on March 21st.
Nash’s comments above brought back a flood of memories of those years when I used to work hard everyday trying to put down info on our faith on the world wide web and Mashallah, it is satisfying to see so many ambassadors of Islam!
I hope you all connect with each other and with your communities evermore as Allah tells us he created us so we would come to know one another!
Salaam!
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