Here is the Biblical calendar laid out from the sabbath (seventh) day to the sixth.

Color codes for the feasts / special days:
|||||||||| - Vernal Equinox (VE), Abib 1
|||||||||| - Selection of the passover lamb, Abib 10
|||||||||| - Passover lamb killed/prepared between the evens;
          first day of Feast of Unleavened Bread (put away leaven), Abib 14
|||||||||| - Passover eaten just after sundown, Abib 15
|||||||||| - Feast of Unleavened Bread, Abib 15-21
|||||||||| - Wave Offering, Abib 16
|||||||||| - Special sabbath, Abib 21 (Exodus 12:16)
|||||||||| - Pentecost, Third month 4-5
|||||||||| - Blowing of Trumpets, Ethanim 1
|||||||||| - Day of Atonement (Fast), Ethanim 10
|||||||||| - Feast of Tabernacles, Ethanim 15-21
|||||||||| - days of note, see below
|||||||||| - days of note, see below

* See Zecharaiah 7:1-5
1* ¶ And it came to pass in the fourth year of king Darius, that the word of the LORD came unto Zechariah in the fourth day of the ninth month, even in Chisleu;
2* When they had sent unto the house of God Sherezer and Regemmelech, and their men, to pray before the LORD,
3* And to speak unto the priests which were in the house of the LORD of hosts, and to the prophets, saying, Should I weep in the fifth month, separating myself, as I have done these so many years?
4* Then came the word of the LORD of hosts unto me, saying,
5* Speak unto all the people of the land, and to the priests, saying, When ye fasted and mourned in the fifth and seventh month, even those seventy years, did ye at all fast unto me, even to me?
6* And when ye did eat, and when ye did drink, did not ye eat for yourselves, and drink for yourselves?
7* Should ye not hear the words which the LORD hath cried by the former prophets, when Jerusalem was inhabited and in prosperity, and the cities thereof round about her, when men inhabited the south and the plain?

** Possible leap day if VE does not occur on this day but on the next