Christmas –

Spanish: Navidad

French: Noël

Portuguese: Natal

Italian: Natale

Hanukkah – 

Spanish: Jánuca

French: Hanoucca

Portuguese: Hanukkah

Italian: Hanukkah

Kwanzaa – 

Spanish: Kwanzza

French: Kwanzza

Portuguese: Kwanzaa

Italian: Kwanzaa

Boxing Day – 

Spanish: Día del Boxeo

French: Le lendemain de Noël

Portuguese: Dia de boxe

Italian: Santo Stefano

Holidays :

Hanukkah – December 18-26

Christmas – December 25

Boxing Day – December 26

Kwanzaa – December 26- January 1

Sources:

https://media1.popsugar-assets.com/files/thumbor/n8bUt1yPUD0zvO0XmWNFuVj763k/685×0:3345×2660/fit-in/2048xorig/filters:format_auto-!!-:strip_icc-!!-/2020/01/07/726/n/1922441/419ff9b05e14b139162ef6.64727550_/i/Best-Winter-Photos.jpg 

https://worldstrides.com/blog/2015/12/december-holidays-around-the-world/