First look
here.
Print it! Focus on Friday and Saturday, April 6th and 7th.
The Passover is prepared during the day of April 6th which, in the Hebrew year 5772, corresponds to the 14th of Nisan.
At sundown - roughly 7:30 pm - although it is still April 6th on the Gregorian calendar, the Hebrew date becomes to the 15th of Nisan. So, if you made the chicken soup at 5:30 and ate it at 8:30, both were done on the 6th of April, but the preparation occurred on the 14th of Nisan and the consumption on the 15th of Nisan.