From my BUI Grade 7-8 materials (back from the 1990's).
Navroz in Fatimid Egypt
According to Maqrizi when General Ghazi Jawhar entered Egypt in Shabaan 969 A.D, the country was already suffering from acute shortage of food due to one and half year old famine. The General arranged to bring grain from Qairawan. Hundreds of boats of grain arrived in due course but it did not help to ease the sitaution. Starvation and epidemic killed hundreds of thousands of people.