The above diagram, “How the Moon Works – Phases of the Moon,” uses the “astronomical new moon.” The “astronomical new moon” is called the “molad.” The “molad” or, “astronomical new moon,” is the dark, unseen moon. It is dark because it is in the “shadowed” phase from the light of the sun. The Karaite new moon is the first visible sliver of the waxing crescent, as seen from Israel. The reader is encouraged to read the explanation of the new moon at the website for Karaite Korner:
http://www.karaite-korner.org/new_moon.shtml.

The following dates for the next six to eighteen new moons and for the Sacred Year, with the proposed, calculated, timing of the Biblical Feasts. The following tables are copied from http://www.karaite-korner.org/holiday_dates.shtml. Because the times are calculated and because the Bible requires the watched, guarding of the first and seventh new moons, the reader is advised that there can be as much as a three day difference between the “molad” and the sighting of the first visible crescent.

New Moons 2009-2010

All of the Biblical Holy Days begin at sunset on the day before the date listed and continue for 24 hours until sunset on the following day. For example, if 1st Unleavened Bread is listed as April 11 this means that work is forbidden from sunset on April 10 to sunset on April 11.