Wait, it's still 2015 somewhere? Thursday, 31 December 2015 23:50:09 HST David-Braverman Geography (0) Sorry, Hawai'i. Your UTC-10 is a full day behind Kiritimati, where it's already coming up on Saturday. But happy new year regardless! And to the few sailors and submariners hanging out in UTC-11, happy new year to you, too, in an hour or so.