Biblical Calendar

The beginning of the year is based on the abiv barley in Israel

The beginning of the month is based on the sighting of the first visible sliver of the new moon from Israel.

We follow the “Actual Visibility with 30-Day Maximum” opinion, which states that a month cannot be longer than 30 days.

We do not follow the “potential visibility” opinion, which states that if the new moon is astronomically expected to be visible (not borderline) but is not seen due to weather, then it will be declared even though it was not visible. We believe that YHVH sets the times and the seasons and controls the weather. We are told to declare what we see, not to declare what is calculated that we may potentially expect to see.

We show the potential visibility of the new moon on these calendars and post the actual sighting information on our home page in the section “Rosh Chodesh.”

The calendars of the 1st, 3rd and 7th months are updated on Rosh Chodesh to show the Moedim based on the above criteria.