How to Spot the New Moon - Some like to use optical aids to spot the moon
in stead of with their naked eye. The problem with this is that the optical aids are actually allowing observers to
spot the moon that they would have otherwise not been able to with just their naked eye, as they did in Biblical
Times. Therefore, it is not recommended to use optical aids, but only with just their naked
eye.
A Simple Formula for Figuring the start of the New Year
Keep in mind that the new moon is not visible for approximately two days/nights, and if not spotted by the 3rd day, it becomes the 1st day of the month. A year in the Hebrew calendar can be 353, 354, 355, 383, 384, or 385 days long, unlike our present day calendars. The ancient Jewish calendar depended not on mathematical calculations and arrangements, but was set from month to month according the physical appearance of the new moon, it was necessary from time to time to “intercalate” a thirteenth month be fore the Passover, to prevent its being moved back into the winter. There is no mention that the new moon (rosh chodesh) had to fall after the vernal equinox, only that Passover or the full moon must fall after the vernal equinox. The full moon usually occurs 14 to 15 days after the new moon. Therefore, the ancients did not base their calendar on the first new moon after the vernal equinox, but rather on the first new moon that fell closest to the vernal equinox, which means the new moon could fall two or more weeks before the vernal equinox, just as long as Passover (which was on the fourteenth day of the first month at the time of the full moon) would occur after the vernal equinox. If it didn’t, then the Jews added a thirteenth month.
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