Best Answer

(((365 * 4 + 1) * 25 - 1) * 4 + 1) * 2.5 * 24 * 60 * 60 - 12 * 60 * 60 or

(((365 * 4 + 1) * 25 - 1) * 4 + 1) * 2.5 * 24 * 60 * 60 + 12 * 60 * 60

Not counting leap seconds, that comes to either 31,556,908,800 seconds or 31,556,995,200 seconds, depending on whether there are two or three leap centuries in the millennium. The third millennium of the Gregorian calendar will be one day shorter than the second millennium because the second millennium had three leap centuries (the 12th, 16th and 20th) while the third millennium has only two (the 24th and 28th).

Q: How many seconds in a millenium with leap years?

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This all depends on how many leap years are in the millenium.

There is 3 175 200 000 seconds in a millennium with leap years.

142009200 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

47336400 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

1609437600 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

Related questions

This all depends on how many leap years are in the millenium.

There is 3 175 200 000 seconds in a millennium with leap years.

164099520 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

142009200 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

47336400 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

1893456000 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

757382400 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

1609437600 seconds approx. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.

536,112,000 seconds without leap years.

Depends on how many are leap years.

there are 321,776,000 seconds in ten years (excluding leap years)

Depending on the number of leap years in the period (19 or 20), it is 2524521600 or 2524608000 seconds, plus any leap seconds.