civil year
The first of the seasons of the Church's Liturgical Year is Advent.
Every holy day of the Orthodox liturgical year relates to the Resurrection directly or indirectly.
The end of the Christmas Season and the liturgical year is celebrated at Candlemas.

SMART Vocabulary: related words and phrases

Years & yearly
academic year
ad
Anno Domini
annual
annually
bissextile
calendar year
CE
centenary
church year
Gregorian calendar
interannual
Julian calendar
leap year
millennial
year end
year's end
year-around
year-round
yearly