Month 1 (Abyb) begins with the 1st renewed moon of spring following 3 moons of winter.
Days for No Buying and Selling:
New Moon Day (The first evening and day following the conjunction i.e. complete disappearance of the moon.)
(Numbers 10:10), (Psalms 81:3)
The 1st, 2nd, 3rd, and 4th Shabat of each month (The 8th, 15th, 22nd, and 29th of the month as counted from the New Moon)
(Leviticus 23:3)
The first day of Unleavened Bread and the Seventh Day (Shabat) following the feast (The 15th and the 22nd of the first month called Abyb)
(Leviticus 23:6)
The Feast of Weeks (Seven complete weeks (sevens) from the day after the wave offering (i.e. the 23rd of the month Abyb), the 16th day of the 3rd month)
(Leviticus 23:15)
The Feast of Trumpets (The 1st day of the seventh month)
(Leviticus 23:23)
The Day of Atonement (The 10th day of the 7th month, a complete day of rest, an appointed shabat)
(Leviticus 23:26)
The Feast of Tabernacles (The 15th day and the 22nd day of the 7th month)
(Leviticus 23:33)
Things to remember
The 30th Day of each Month
(To make preparation for New Moon Day, the Day of Gladness, a solemn day. This is not a shabat day. Work, buying, selling not forbidden)
(Deuteronomy 16:1) (1 Samuel 20:5 )