"New Year's Eve".
It is the eve of the New Year, so New Year is in the genetive (possessive) case, thus: New Year's.
Yes, when it is New Year's Eve or New Year's Day. They are possessives, as in the day that belongs to a new year. If you are talking about plurals, then there is no apostrophe, like "New years are not like old years".
yes
No, Christmas Eve does not need an apostrophe.
Eve => night before => New years eve => night before the new years day.
New years eve is in december
New years eve.
Who is perfroming in times square at new years eve 2013
No. It should be New Year Party.
The eve, e.g. the night before New Years Day is New Years Eve.
The correct way is to write New Year's Eve.
We celebrate New Years Eve because it is a new year and because you get more time with family and friends.
new years eve