#easter

Does the interpetation of "signs and seasons" (otot umoadim, אותות ומועדים) require an allowence for annual church events (such as the celebration of the Lord's nativity, circumcision, passion, ressurection, ascension, and the sending of the Holy Spirit), as this article suggests? In general...

Since we are on the subject of holidays and church history: How do those who oppose all holidays explain the antiquity of Easter and the passionate debates on the date? Are there any examples of opposition to the practice in the early church?