I became Anglican because of the church calendar. (Not only because of the church calendar but it was part of the process.) Non-calendar Christians usually observe Christmas (not always Advent, though it is growing) and Good Friday and Easter. That’s about it. The rest of the year is up to the preacher, the pastor, the elders and deacons, and up to the congregation. Many pastors wisely organize their churches to be formed over time through a series of themes ”” or books of the Bible (Martyn Lloyd-Jones and John Piper preached through Romans for almost two decades) ”” but none can improve on the centrality of Christ in the church calendar.
