I'm not sure I follow you. If Ecclesiastical Spring begins on March 21, and the first full moon after that is April 19, then why would Easter be on March 24th?
Sorry. You were right. What I was referring to was the the church's own lunar cycle, which needn't coincide with the astronomical lunar cycle, they use to calculate the date of Easter; but that wasn't a decisive factor in this year's determination.
The March 21 rule, btw, was defined by German mathematician Carl Friedrich Gauß back in 1800. The reason for his model was the segmentation of the Earth into different time zones; the clergymen were at odds over what time zone should apply to the beginning of spring: Greenwich (due to the prime meridian) or Jerusalem (due to the the Jewish Passover, which provided the basis for the establishment of Easter)? Gauß postulated that March 21 should be the crucial date for the calculation.
The next Easter paradox, btw, will take place on April 25, 2018.