The new liturgical year began on the First Sunday of Advent.
The Calendar notes on the Liturgy Office website provide information about feasts and seasons and the Cycle of Prayer intentions. The monthly pages for the liturgical year 2018 are now available. As well as the web pages there is a downloadable calendar which can be printed to A6 size and inserted in breviaries or missals. Further details from the Liturgy Office site.
Also, see the Seasons page for information and guidance on celebrating the seasons and feasts of the liturgical year.