How many seconds are in 53 years?

Answer 1

1 666 828 800 is the number of seconds in 53 years.

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I disagree. 53 years can contain 12 to 14 leap years: 12 if it start on an ordinary year and includes a century year which is not a multiple of 400, 14 if it starts and finishes with a leap year and 13 otherwise.

That is 19,357 or 19,358 or 19,359 days.

Each day is 24 hours: so the above gives 503,282 or 503,308 or 503,334 hours.

Each hour = 3600 seconds so the answers are: 1,672,444,800 seconds or 1,672,531,200 seconds or 1,672,617,600 seconds,

Then, just to complicate matters, the earth's year is not a constant and from time to time leap seconds are added (and less often) subtracted. There is no systematic patter to leap seconds.

In any case, the previous answer would imply 19,292 days which is way short of the 19,345 days required by 53 ordinary years.