The 6th Day is a film.
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
 The word "day" may also refer to daytime, a time period when the location receives direct and indirect sunlight

