86 



Whenever the moon is less than seventeen degrees from its node at a time 

 when it is in conjunction with the sun, there must be a solar eclipse ; and 

 whenever it is less than twelve degrees from its node at the time of full moon, 

 there must be a lunar eclipse. Within these limits the less the distance of 

 the moon from its node, the greater will be the number of digits eclipsed, 

 whether of the sun or moon. 





