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en.wikipedia.org/wiki/Day

A day is approximately the period of time during which the Earth completes one rotation around ... The exact moment of, and the interval between, two sunrises or sunsets ... The length of daytime averages slightly more than half of the 24-hour day. .... Validity of tickets, passes, etc., for a day or a number of days may end at ...

www.timeanddate.com/time/earth-rotation.html

... over time. See the exact day length for today, yesterday, and tomorrow. ... So in terms of solar time, most days are a little longer than 24 hours. .... Numbers provided by the International Earth Rotation and Reference System Service ( IERS).

medium.com/the-philipendium/a-day-is-not-24-hours-c36ee96078c6

Dec 6, 2016 ... This is nearly 4 minutes shorter than our 24-hour standard day. ... This daily progress in the Earth's orbit is almost exact a degree ... Although you can consider the length of a true solar day to be the amount of time from one ...

blog.keithw.org/2013/02/q-if-one-day-is-not-exactly-24-hours.html

Leap year was created to help scientists fudge numbers to fit into theory of spinning .... If we were using a sidereal day (1 exact rotation of the earth = 24 hours) ...

www.universetoday.com/123218/how-long-is-a-day-on-earth-2

Nov 5, 2015 ... This is different from the amount of time it takes for the Earth to turn once on its axis – the 23 hours, 56 minutes. Also known as a sidereal day.

The 24-hour day we all know and love is called a solar day. ... If there aren't 24 hours in a day, and it's 23 hours and 56 minutes, how many minutes are in .... when it comes to measuring the exact rotation period of the Earth.

www.easysurf.cc/tspan.htm

Time Duration Calculator Enter earlier or start time information at "From:" Enter later or end time information at "To:" Enter hours and minutes. Select am or pm.

pumas.jpl.nasa.gov/files/04_21_97_1.pdf

Apr 21, 1997 ... pattern of 366-day "leap" years and 365-day regular years that approximates your planet's average number of ... Julius Caesar instituted the Julian Calendar in which a year has an extra day if its number is ... must consider how exact the value of 365.2422 is. ... Error in hours, minutes and seconds per year.

www.wits.ac.za/media/migration/files/cs-38933-fix/migrated-pdf/pdfs-8/eng_has%20a%20day%20always%20lasted%2024%20hours.pdf

no, not always. the length of a day is determined by the time it takes for the Earth to ... axis once every 24 hours, while revolving around the Earth-Moon centre of gravity, or barycentre, once ... But how can day length and the number of days.

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