Yesterday factually exists on a calendar noon to midnight and today starts midnight to noon by any clock in any time zone relative to that geographical longitude passing by the Intellectual international dateline determined by human intellect dawn to dusk.
How does two halves of a rotating planet have two days working same rotation 7 times a week 52 times a year 365 or 366 rotations from winter solstice norther hemisphere and not the southern's hemisphere of summer same rotation. Dawn is forever the counter clockwise rotation of the planet the sun moves clockwise in the sky from the core of the solar system this planet revolves around like the other debatable 7 or 8 planets depending upon which science calls Pluto a planet or not.
How does two halves of a rotating planet have two days working same rotation 7 times a week 52 times a year 365 or 366 rotations from winter solstice norther hemisphere and not the southern's hemisphere of summer same rotation. Dawn is forever the counter clockwise rotation of the planet the sun moves clockwise in the sky from the core of the solar system this planet revolves around like the other debatable 7 or 8 planets depending upon which science calls Pluto a planet or not.