Counting 15 days from the new moon of ABiB will reach the evening Full Moon on the first day of Unleavened Bread. ABiB is the time when the spring barley is ready for harvest. Yehawah’s instruction to Moses are actually simple to follow. Here's a step-by-step explanation for predicting the time of Passover and the High Holy Sabbath of Unleavened Bread. see also: JOSHUA's PASSOVER n the SABBATH
The commandment to observe the Passover "ritte" by partaking of the symbolic sacrificial lamb, blood of redemption, and unleavened bread of affliction is often misunderstood and neglected. Yahweh Elohim desires to lead mankind out of the darkness of sin and into the light of salvation. Behold the Lamb of Yahweh that takes away the sin of the world.
Exodus 12:1-2; (NASB95) — 1 Now the Lord said to Moses and Aaron in the land of Egypt, 2 “This month shall be the beginning of months for you; it is to be the first month of the year to you.
[Genesis 1:5; Yehawah established that each day begins at evening with 12 hours of darkness and later 12 hours of daylight to complete one day. The setting of the sun establishes the end of one day and the beginning of another. As the sun disappears beneath the horizon than the evening twilight is the start of a new day. There is only one twilight associated with the evening of each new day.]