Well, locally, people will celebrate midnight. I got invited elsewhere to celebrate. Julie has to work overnight, so I don't know if I will go join the circus.
After all, Australia started the New Year (Gregorian) about 9 hours ago, New York has another 7 hours to go, and San Francisco about 10 hours more, etc. I use ZoneTick to co-ordinate myself, so all four clocks show on my Desktop. It makes it difficult for me to run out and party...
I have just listened to a great radio show on Time, that Crissie sent me from the USA. It includes reference to the ECOlogical calendar, devised by a guy in California who also arranges theatrical/spatial happenings through Antenna Theatre; an interview with the woman who wants to construct an amazing sculpture in London, powered by The Thames, and indicating the phases of the moon and tides, etc, which you can find out about here at Aluna; and some great stuff about body clocks - and the effects of night-shift working, as well as the time of day we take medicines affecting their usefulness. They call it Chronobiology now, but it sounds like Paracelsus and other astrologer-healers might say "Duh!"