Days of Heaven is a 1985 film.
" or "the following day"The full day covering both the dark and light periods, beginning from the start of the dark period or from a point near the middle of the dark periodA full dark and light period, sometimes called a nychthemeron in English, from the Greek for night-day; or more colloquially the term 24 hours
In specific applications, the definition of a day is slightly modified, such as in the ISQ day (exactly 86,400 seconds) used for computers and standards keeping, local mean time accounting of the Earth's natural fluctuation of a solar day, and stellar day and sidereal day (using the celestial sphere) used for astronomy

