The Bible lists Holy-days that The Most High has ordained as holidays. They are as follows:
Passover (Pesach)
Leviticus 23:4-5
4 These are the feasts of the Lord, even holy convocations, which ye shall proclaim in their seasons.
5 In the fourteenth day of the first month at even is the Lord’s passover.
Unleavened Bread
Leviticus 23:6-8
6 And on the fifteenth day of the same month is the feast of unleavened bread unto the Lord: seven days ye must eat unleavened bread.
7 In the first day ye shall have an holy convocation: ye shall do no servile work therein.
8 But ye shall offer an offering made by fire unto the Lord seven days: in the seventh day is an holy convocation: ye shall do no servile work therein.
Firstfruits
Leviticus 23:10
10 Speak unto the children of Israel, and say unto them, When ye be come into the land which I give unto you, and shall reap the harvest thereof, then ye shall bring a sheaf of the firstfruits of your harvest unto the priest:
Feast of Weeks (Shavuot)
Leviticus 23:16
16 Even unto the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat offering unto the Lord.
Feast of Trumpets
Leviticus 23:24
24 Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation.
Day of Atonement
Leviticus 23:27
27 Also on the tenth day of this seventh month there shall be a day of atonement: it shall be an holy convocation unto you; and ye shall afflict your souls, and offer an offering made by fire unto the Lord.
Feast of Tabernacles (Sukkot)
Leviticus 23:34
34 Speak unto the children of Israel, saying, The fifteenth day of this seventh month shall be the feast of tabernacles for seven days unto the Lord.
Self-reflection: Am I following The Shepherd, or the traditions of men?