- Winterval: Secular name for winter festivities coined
by Birmingham City Council to encompass all holidays being recognized
from October to January
- Zamenhof Day: (December 15) - Birthday of Ludwig Zamenhof, inventor of Esperanto; holiday reunion for Esperantists
- Winter Solstice, Yule: (December 21 or December 22) (Late June weekend in Australia) - Celebration of the Winter Solstice.
- HumanLight: (December 23) - Humanist holiday originated by the New Jersey Humanist Network
- Chrismukkah: Slang term for the amalgam of Christmas and Hanukkah celebrated by religiously mixed families and couples
- Yuletide: (December 25) - Classic and modern, respectively, terms for the social and federal December 25th holiday
- Boxing Day: (December 26) - Gift-giving day after Christmas.
- Kwanzaa: (December 26 - January 1) - Pan-African festival
- Yulefest, Midwinter Christmas (around late June or July) - Australian New Zealand winter 'Christmas/Yuletide'
- New Year's Eve: (December 31) - Last day of the Gregorian year
- Hogmanay: (Night of December 31 - Before dawn of January 1) - Scottish New Years Eve Celebration
- New Year's Day: (January 1) - First day of the Gregorian year
- Burns Night: (January 25) - Birthday of Robert Burns
- Groundhog Day: (February 2)
- Quebec City Winter Carnival: (February) - Annual celebration of winter.
- Fur Rondy: (Late February and early March]) - Winter celebration in Anchorage, Alaska
- Leap Day: (February 29, every four years) 2008, 2012, 2016, 2020, 2024, etc.