Why can you not understand that the position of the sun is never the same for any two Passovers?
Passover is controlled by the Aviv Moon, and nothing else.
Passover is not celebrated in “March” ever!
Passover is celebrated in the Biblical month of the Aviv Barley, the first Biblical month, which changes constantly, always has and always will.
You are confusing Yehova’s Passover with the sun god worshipers false Passover. None of Yehova’s events occur on days of the sun god’s calendar.
Where was the barley in the wilderness?
This literally must be true - At the end of Adar, at the new moon, the condition of the barley is assessed. If the barley is declared 'aviv', Passover and First Fruits are two weeks away. If the barley is not 'aviv' at that time, it will not be in a condition to be parched at the time of the First Fruits offering. If the barley is not 'aviv', the month of Adar II is declared instead, pushing the whole calendar forward 29(?) days, at which time the barley will assuredly be near ripe.
What is interesting is what to do with Purim - IIRC. Purim is to be celebrated in Adar Bet if it exists, which suggests that the Jews had formalized their calendar away from Torah fairly early on, for they would have passed Purim if they waited for the new moon to determine the barley and declare Adar Bet accordingly... Go figger.