Globalization: The interconnectedness of the world has led to the sharing and spreading of cultural practices. As people from different cultures interact and influence each other, certain celebrations gain global popularity. New Year's Eve has become a widely recognized and celebrated event due to globalization.

Social Convention: Over time, certain dates and events become social conventions. New Year's Eve is one such convention, and people celebrate it as a way to mark the passage of time, reflect on the past year, and set goals for the future.

Festive Atmosphere: New Year's Eve is associated with festivities, parties, and fireworks, creating a joyous and celebratory atmosphere. This festive spirit contributes to the widespread appeal of New Year's Eve celebrations.

That is simple: most people do not even know what the winter solstice is and just want to follow tradition.

Carlo Trugenberger ---

Carlo -- people were celebrating the winter solstice long before arbitary Calendars, "New Years Days" and the like were invented for social eg religious and political reasons.

See Stonehenge and many other ancient stone circles in England and elsewhere oriented to the winter solstice. James

IMPORTANT The question is really about why human beings are so prone to create vaste systems of belief based on remarkably little evidence....