First instant at or after jdUt when the elongation equals
targetDegrees (0 = new moon, 90 = first quarter, 180 = full moon,
270 = last quarter). Converges to well under a second.
Parameters
jdUt: number
targetDegrees: number
Returns number
Example
nextSyzygy(2451545, 180); // ≈ 2451564.6 (full moon of 2000-01-21)
First instant at or after
jdUtwhen the elongation equalstargetDegrees(0 = new moon, 90 = first quarter, 180 = full moon, 270 = last quarter). Converges to well under a second.