After Carrie goes to Staten Island to see the politician at his dinner function, she just misses "the last ferry" and is rescued by him and taken back to the city. The Staten Island Ferry runs 24 hours a day.
Ricky, the firefighter, tells Samantha he was born in October. This would make him either a Libra (if he was born October 1st through October 22nd) or a Scorpio (October 23rd through October 31st). The announcer stated he was a Capricorn, which means his birthday would have to be between December 22nd and January 20th.
Carrie very pointedly avoided giving Bill her phone number, but when he stops in front of her building to pick her up for the dinner in Staten Island, he calls her on the phone in hopes of convincing her to go.