Molad in a sentence

The molad drift could be corrected by using a progressively shorter molad interval that corresponds to the actual mean lunar conjunction interval at the original molad reference meridian.

Comparing the days of the week of molad Tishrei with those in the keviyah shows that during 39% of years 1 Tishrei is not postponed beyond the day of the week of its molad Tishrei, 47% are postponed one day, and 14% are postponed two days.

Secondly, one must determine the number of days between the starting Tishrei molad (TM1) and the Tishrei molad of the next year (TM2).

Sany Arazi, a left-wing political activist who works with the Molad think tank, says he felt deeply let down by the left-wing parties failing to coalesce into a bloc, and blames the Labor Party for that.

Accordingly, for convenience, a long-term average length, identical to the mean synodic month of ancient times (also called the molad interval) is used.

For calendar descriptions in general the day begins at 6 p.m., but for the purpose of determining Rosh Hashanah, a molad occurring on or after noon is treated as belonging to the next day (the first deḥiyyah).

Four gates The annual calendar of a numbered Hebrew year, displayed as 12 or 13 months partitioned into weeks, can be determined by consulting the table of Four gates, whose inputs are the year's position in the 19-year cycle and its molad Tishrei.

Given the Tishrei molad of a certain year, the length of the year is determined as follows: First, one must determine whether each year is an ordinary or leap year by its position in the 19-year Metonic cycle.

If the application of deḥiyyah molad zaken would place Rosh Hashanah on one of these days, then it must be postponed a second day.

In calculating the number of months that will have passed since the known molad that one uses as the starting point, one must remember to include any leap month(s) that falls within the elapsed interval, according to the cycle of leap years.

It is not possible, however, for any individual Hebrew date to be a week or more "late", because Hebrew months always begin within a day or two of the molad moment.

So for example if the Tishrei molad is calculated as occurring from noon on Wednesday (the 18th hour of the fourth day) up until noon on Thursday, Rosh Hashanah falls on a Thursday, which of course starts Wednesday at sunset wherever one happens to be.

The discrepancy makes the molad interval about 0.6 seconds too long.

The first of these rules (deḥiyyah molad zaken) is referred to in the Talmud.

These are called the Rosh Hashanah postponement rules, or deḥiyyot: citation citation citation citation citation *If the molad occurs at or later than noon, Rosh Hashanah is postponed a day.

This is called deḥiyyah molad zaken (literally, "old birth", i.e., late new moon).