NewYear'sDayisthefirstdayofthenewyear,celebratedonJanuary1onthemodernGregoriancalendar.ItisalsoobservedinancientRome,althoughdifferentdateswereused.InallcountriesthatfollowtheGregoriancalendar,exceptforIsrael,itisapublicholiday.Thenewyearisoftenwelcomedwithfireworksatmidnight.OntheJuliancalendar,January1correspondstoJanuary14ontheGregoriancalendar.SomeEasternOrthodoxchurchescelebratetheNewYearonthisdate.