US: Giving Tuesday (Dec 1)
Russia & Greece: St. Nicholas Day (Dec 6)
Scandinavia: St. Lucy's Day (Dec 13)
Global: Hanukkah (Dec 10-18)
Global: Christmas (Dec 24-26)
UK, Australia, Canada: Boxing Day (Dec 26)
US: Kwanzaa (Dec 26 - Jan 1)
Japan: Ōmisoka (Dec 31)
Scotland: Hogmanay (Dec 31)
China: Chinese New Year (Feb 12)