 
 <translate> This is the relevant information: The most extreme tidal range occurs during spring tides, when the gravitational forces of both the Sun and Moon are aligned (syzygy), reinforcing each other in the same direction (( new moon) ) ) or in opposite directions (full moon).
So, the answer is new moon. <ibo> Nke a bụ ihe ọmụma dị mkpa: Ọnọdụ oke mmiri na-eme n'oge mmiri ozuzo nke oge opupu ihe ubi, mgbe ike ndọda nke ma Anyanwụ ma Ọnwa jikọtara (syzygy), na-ewusi ibe ha ike n'otu ụzọ ((ọnwa ọhụrụ) ) ) ma ọ bụ n'ụzọ dị iche (ọnwa zuru ezu). Ya mere, azịza ya bụ ọnwa ọhụrụ. 