- Days of Unleavened Bread (called Passover in the New Testament)
- Pentecost (called “Festival of Weeks” in the Old Testament)
- Festival of Trumpets (called a “memorial of blowing of trumpets” in the Old Testament)
- Day of Atonement
- Festival of Tabernacles (called Festival of “Booths” or “Shelters”)
- The Eighth Day (immediately follows the Festival of Tabernacles)
These days had symbolic or prophetic significance in their original context of the national life of Israel. The first two eventually were accommodated to the Roman calendar and are now celebrated by the mainstream of Christianity as Good Friday, Easter and Pentecost. (Much of the book of Hebrews refers to ceremonies of the Day of Atonement that were completely fulfilled in Jesus Christ, and which are therefore now redundant.)
Please note that we do not believe that anybody gets extra credit with God for following our particular calendar. We are not Jewish. We are not trying to be Jewish. We do not sacrifice animals (nor do Jewish people!) or wear unusual clothing on these days. And we do not believe that people who do things according to the Old Covenant law can earn salvation in any way.
We celebrate the fact that God kept his promises to the people of Israel by sending a Jewish Messiah to save all people, Jewish and non-Jewish. We celebrate many of the festivals that Jesus himself celebrated because we are not ashamed of his Jewishness. We do not believe it is inherently wrong to celebrate at these times just because they are found in the Old Testament. For this reason we have reason to hope that ours will never become an anti-Semitic fellowship.
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- One final note for the sake of clarity:
- Members of Wascana Fellowship are under no obligation or pressure to attend these celebrations. (They would hardly be “celebrations” otherwise.)
Wascana Fellowship 
The Special Celebrations page is very well presented. It is concise, informative and I believe quite original in how it deals with its subject matter. You have left little room for misunderstanding by any individual evangelical who might happen to stumble upon your site.
In retrospect, I feel it is quite sad that the observance of these days is
usually viewed by most Christians as a legalistic aberration. You are to be commended for wanting to be free to choose the manner of your worship based on your understanding of scripture.
Evangelical Christianity in general needs to get past their paranoia of anything Hebraic roots or the celebration of the festivals. As Mr. Spock would say, “It is highly illogical.”
Thanks for the observation. There are times when I have hope. Interestingly enough, even RBC Ministries was once interested enough to do booklets and a video series about the biblical festivals and their meaning to both Jews and Christians.
Check these out: http://www.rbc.org/bible-study/discovery-series/bookletDetail.aspx?id=48234
http://www.dhp.org/Products/Day-of-Atonement—Yom-Kippur-and-Sukkot—Feast-of-Tabernacles__DV708.aspx
Here is what I thought was a very balanced approach on Mart De Haan’s part: https://www.rbc.org/bible-study/been-thinking-about/2000/11/01/column.aspx
It saddens me that these excellent resources are no longer available from the publishers.