So why is ya pastor telling you it's on #January1st tho??? Go ask!
And יהוה spoke to Mosheh and to Aharon in the land of Mitsrayim, saying, “This month is the beginning of months for you, it is the first month of the year for you. “Speak to all the congregation of Yisra’ĕl, saying, ‘On the tenth day of this month each one of them is to take for himself a lamb, according to the house of his father, a lamb for a household. ‘And if the household is too small for the lamb, let him and his neighbour next to his house take it according to the number of the beings, according to each man’s need you make your count for the lamb. ‘Let the lamb be a perfect one, a year old male. Take it from the sheep or from the goats. ‘And you shall keep it until the fourteenth day of the same month. Then all the assembly of the congregation of Yisra’ĕl shall kill it between the evenings. ‘And they shall take some of the blood and put it on the two doorposts and on the lintel of the houses where they eat it. ‘And they shall eat the flesh on that night, roasted in fire – with unleavened bread and with bitter herbs they shall eat it.
Shemoth (Exodus) 12:1-8 TS2009