- 60 seconds in 1 minute
- 60 minutes in 1 hour
- 60 x 60 = 3600 seconds in 1 hour
- 24 hours in 1 day
- 3600 x 24 = 86,400 seconds in 1 day
- 7 days in 1 week
- 86,400 x 7= 604,800 seconds in a week
- 4 weeks in 1 month
- 604,800 x 4 = 2,419,200 seconds in a month
- 12 months in 1 year
- 2,419,200 x 12 = 29,030,400 seconds in a year
- 100 years in one century
- 29,030,400 x 100 = 2,903,040,000 seconds in a century
The math differs with this calculation...
- 604,800 seconds in a week x 52 weeks in a year
- 604,800 x 52 = 31,449,600 seconds in 1 year
- 31,449,600 x 100 = 3,144,960,000 in 1 century
And yet one more time, the math differs...
- 86,400 seconds in 1 day x 365 days in a year
- 86,400 x 365 = 31,536,000 in 1 year
- 31,536,000 x 100 = 3,153,600,000 seconds in 1 century
So... It depends on whether it is a leap year!
The first example although may seem correct for all intensive purposes, it does not calculate the additional weeks in a year... 52, not 48!
So careful calculations are needed to get it right.
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