Prior to the Second Vatican Council there was a common experience and emphasis on two major divisions in the liturgical or ecclesiastical year (at least this is what I am told and what I have read). These two divisions are the Temporal Cycle and the Sanctoral Cycle. The Church still retains these two "propers" within her sacramental life, but unless you frequent the Divine Office you might not even know, let alone realize, that this is still part of reality.
There is great wisdom in how the Church understands the order in which God has created all that is visible and invisible. To appreciate the temporal order proper to us still living on Earth and the sacred order for those living with God in Heaven is to see not just with eyes of faith but to experience the reality of all that is. These two orders are simultaneously present--for we live in a reality that is and that is becoming.
The problem today is that we have confused the two. All too often we think that this earthly world is the reality that is and that Heaven is something becoming of someone's imagination. The truth of God's order is that Heaven is what is and we are in world becoming. And the proper distinction between the Temporal Cycle, the experience of becoming, and the Sanctoral Cycle, the experience of being, can help us reclaim time according to God's cosmological symphony.
The Church used to frequently communicate about the time we spend with God in a language reflective of our understanding of music--particularly when she refers to worshiping God. This makes perfect sense, given that our experiences of God happen in time and we desire to sing praises to him when we experience an encounter with him.
The most basic miracle naturally found in music is called an octave, an interval between pitches according to the frequency. I am no music theorist or expert nor will I attempt to be one. Suffice to say, everything that is knowable is categorized and labeled so we can communicate about our reality. Music, time, and worship, which are intimately related, are no exception.
Some have said that the Church "simplified" her discussion of her liturgical life by reducing the structure and order of all things related to the liturgy. For example the Church for all practical purposes no longer refers to liturgical octaves. In doing so we seem to have lost time, specifically sacred time. Those intervals between solemnities and feasts seem to have been as important as those days which the octaves prepared us to celebrate and helped us to prolong the celebration. Like in music, if you loose an octave you're off pitch.
I pray that as the Church continues to revise the words of her liturgical rites, as done in the Roman Missal, that she will help us reclaim our lost octaves so we can all stay on time and keep pitch with the angels and saints in Heaven.