The holiday commemorating (the beginning of) the new year.

(astronomy) Great Year; one complete precession of the equinoxes, approximately 25,765 years.

plural of year mark

solar year

Of the age of one year.

(astronomy) the time it takes for the Solar System to orbit around the center of the Milky Way Galaxy, estimated to be from 225 to 250 million years.

Alternative spelling of yearbook

(Britain, accounting) Synonym of fiscal year

next year; the year following the current year, especially the early part of it.

(accounting) An accounting period of one year, not necessarily coinciding with the calendar year.