a complete rotation of the earth on earth 's axis / itself takes 1 / one day & 1 day is equal to 24 hours ->  a complete rotation of earth takes 24 hours  earth rotating on its tilted axis occurs once per day & earth is a kind of planet ->  the earth is a planet that rotates on its tilted axis once per day  the earth is a planet that rotates on its tilted axis once per day & a planet rotating causes cycles of day and night on that planet ->  the earth rotating on its tilted axis causes the cycles of day and night on earth  a complete rotation of earth takes 24 hours & the earth rotating on its tilted axis causes the cycles of day and night on earth -> a complete rotation of earth takes 24 hours and causes day and night