How many hours are in two days?
Answer48
Each day has 24 hours, so two days have 48 hours.
Science · Facts & stats
2 Day facts & stats
7 fact-checked facts about days and how we measure them, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Which date is added to the calendar in a leap year?
AnswerFebruary 29
Leap years add February 29 to keep the calendar in step with Earth's orbit of about 365.24 days.
Going deeper
About how long does Earth take to rotate once relative to the distant stars?
Answer23 hours 56 minutes
This sidereal day is about 4 minutes shorter than the 24-hour solar day because Earth also moves along its orbit.
Which planet has a day (one rotation) longer than its year?
AnswerVenus
Venus takes about 243 Earth days to rotate once but only about 225 Earth days to orbit the Sun.
A day on Mars is called a 'sol'. About how long is it?
AnswerAbout 24 hours 40 minutes
A Martian solar day lasts about 24 hours 39 minutes, only a little longer than an Earth day.
Expert level
Which planet spins fastest, giving it the shortest day in the solar system?
AnswerJupiter
Jupiter rotates once in just under 10 hours, the shortest day of any planet.
Earth's days are very slowly getting longer, mainly because of what?
AnswerTidal friction caused by the Moon
Tides raised by the Moon act as a brake on Earth's spin, gradually lengthening the day over millions of years.
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