Winter Celebrations Of The World Christmas- is a Christian holiday that celebrates the birth of Jesus Christ. No one knows the true date of his actual birth, but it is observed on Dec. 25. Christians and others celebrate this holiday by attending church, or partaking in religious ceremonies unique to year. Most popular: the Christmas tree, and/or adorning the house with Christmas lights. Circulation of Christmas cards, kissing under mistletoe, well wishing, and feasts are the most common forms of celebration of Christmas. Usually, during Christmas, families exchange gifts, an allusion of remembrance to the gift of life that was given to Christians by Jesus Christ.