Input (grade 12): This is predicted to be the longest eclipse during the current 10,000 year period, from 4000 BC to AD 6000 (eclipse predictions by Fred Espenak, NASA/GSFC.
Output (grade 11): This is predicted to be the longest eclipse during the 8,000 year period from 3000 BCE to CE 5000 (eclipse predictions by Fred Espenak, NASA/GSFC.