Christmas season

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Advent, the period from Advent Sunday (inclusive) through the start of Epiphany.
• noun Christmastide, the Twelve Days of Christmas, starting on Christmas Day and ending on Epiphany, January 6
• noun Yuletide
• noun US, informal The winter season starting around Thanksgiving (typically Black Friday) and ending at or about New Year's Eve.
• noun informal, business, marketing The period at the end of the year when retailers promote Christmas shopping opportunities