New Year's Day, also simply called New Year or New Year's, is observed on 1 January, the first day of the year on the modern Gregorian calendar as well as the Julian calendar. Whilst most solar calendars (like the Gregorian and Julian) begin the year regularly at or near the northern winter solstice, the start of the new year in cultures that observe a lunisolar or lunar calendar (such as the Chinese New Year and the Islamic New Year) happen at less fixed points relative to the solar year.