What does it mean to be born on 1st January?
What sign is a January 1 birthday?
January babies' horoscope sign is Capricorn or Aquarius.
What percentage of people are born on January 1?
That's 14%, improbably high even if you don't assume an even distribution of births throughout the year, which you shouldn't, at least for people born in the U.S. For native-born Americans, New Year's Day is actually one of the least popular birthdays.