ASHORTWORK
Biblical Understanding based on the Record of Scripture
YHVH created the sun and the moon and set them in the heavens, in part, to show when to observe His Festivals. The date listed on this calendar for the start of the 1st month and the 7th month is based on the first projected sighting, after sunset, of the renewing of the light of the moon.
Leviticus 23:26-28,32 NKJV
And Yehovah spoke to Moses, saying:
Also, the tenth day of this seventh month shall be the day of Coverings (kippur). It shall be a holy convocation for you; you shall afflict your souls, and offer an offering made by fire to Yehovah.
And you shall do no work on that same day, for it is a day of Coverings, to make a covering (Kaphar) for you before Yehovah your God (Elohim).