How many hrs are there in a day?

Question

if we have a leap yr because of too many days in the year then there cant be 24 hrs in a day. can there?

Answer 1

yeah......right, do you live on another planet? Get a grip.  

Answer 2

There are 24 hours in every day.

When leaps years occur we have less days.

Answer 3

The rotation of the Earth is very slowly slowing down, mostly because of the gravity from the Moon, so the length of the solar day is very slowly increasing. We want our clocks to follow the changes in the length of the solar day (so that "12 o'clock noon" won't slowly drift into the nighttime). There are two ways to do that: adjust the length of the seconds (and hence also of the minutes and hours) in pace with that of the solar day so that you can keep the same number (86400) of seconds to a day, or else keep the seconds equally long but insert or omit seconds from specific days as needed to keep pace with the solar day. The first method was used until 1972, and the second method is used since then.

So, in current official timekeeping, almost all calendar days have a length of exactly 24 hours of each exactly 60 minutes of each exactly 60 seconds, for a total of 86400 seconds, with those seconds being equal-length SI seconds as measured by atomic clocks. The only exceptions are the days when a leap second is inserted, which makes such days 1 second longer than the regular days, or 86401 seconds. It is possible in theory that seconds must be skipped instead of inserted, or that more than one extra second must be added to a given year, but those cases haven't happened yet until now (2006).

Leap seconds are inserted when the need arises, which is irregularly, because the slowing down of the Earth does not have a regular pace. For example, a leap second was inserted 6 times between the beginning of 1992 and the end of 1998, but after that none were needed until the end of 2005. See http://en.wikipedia.org/wiki/Leap_second for more information about leap seconds.

There are other time scales besides the official clock time, and those can continue to use days that are all 24*60*60 seconds long, but then those time scales must either slowly run out of step with the Sun (such as for the TAI = International Atomic Time scale), or else have seconds that are not all equally long (such as for Solar Time).

Answer 4

Yes there can, there are just diffferent amount of hours in each year. but the same in each day.I actually read about this once where it was explained really well actually! Um, its something to do with the orbit of the earth around the sun and the calculation of '1 year' which is slightly off (or the calender is) so the leap years just put it back on track, which is easier than changing the whole calender!

Answer 5

Try studying instead of mooching.

Answer 6

24 hours still....hmm shouldn't you know this?  

Answer 7

Most of the answers here are wrong.

There are 23hrs and 57mins in a day. The fact we use 24hrs cause a few problems which are sorted by the leap year which also sorts out the problem that there aren't 365days in a year!

Answer 8

You're right. There are 24 hours in the day, but only in the calendar time we have created.

The Gregorian calendar bases its year on the vernal equinox year, which is the amount of time between vernal equinoxes (the point when the subsolar point on earth crosses the equator from south to north).  The length of this year is approximately 365.24237 (24-hour periods).  

In the Gregorian Calendar, which is used by most of the world, a leap year occurs every four years or 97 years out of every 400. This is done as a way to keep seasons, astronomical events, and time differences in sync.

Without leap years, the Gregorian calendar would lose veracity in just over a hundred years, leading to time differences between day and night, and moving the equinox early.

The Gregorian method is the most accurate way to creating leap years. By adding a 29th day in all years divisible by 4 (except for years ending in -00), the Gregorian calendar will fall behind only one day every 8000 years.

Answer 9

yes 24 we just have less days

answer mine please

http://uk.answers.yahoo.com/question/ind...

Answer 10

Still 24. In a leap year you add a day to February.

Answer 11

stay up on leap year and find out =D