Ordinary Time begins, after many feasts and solemnities. I’ll briefly explain what feasts and solemnities are within the liturgical year, and then explain what Ordinary Time is.
Normally, we live and move within a chronological year (chronos, which means time), that is, we live days, weeks, months, and years. For example, we are in the month of June of the year 2025. And we understand that, and there’s no difficulty in it. Now, the Church lives and moves in a non-chronological year (time) but in a liturgical year. Liturgical refers to the liturgy. What is the liturgy? It is the way the Church celebrates its faith. Altars, flowers, images, songs, incense, gestures (blessings, genuflections, bows, bows), processions, feasts of saints, veneration of the Virgin Mary, etc. And the most important part of the liturgy is the celebration of the Holy Mass. In the Mass, we celebrate or commemorate very important moments of our God. That’s why we celebrate Advent, Christmas, Lent, Holy Week, Easter, the Baptism of the Lord, Pentecost, the Ascension of the Lord, the Holy Trinity, etc. With this in mind, we say that feasts are liturgical celebrations that the Church wants to highlight to deepen our faith. For example, when we celebrate a saint, or a dedication to the Blessed Virgin, etc. Solemnities are also celebrations of our faith, but of greater importance. For example: the Solemnity of the Most Holy Trinity; the Solemnity of the Body and Blood of Jesus; the Solemnity of the Sacred Heart of Jesus, etc. To conclude, we can say that Ordinary Time is that which is not framed by special celebrations like Advent, Christmas, or Easter. It is a time when faith is lived in a way that this time indicates, that is, in a simple way, in our ordinary daily life, simple and with hope. That is why the priest uses the color green in his liturgical garments.
