How many hours in 30 years?

Answer 1

In any thirty year cycle, there can be either seven or eight leap years. For example, between 2012 and 2042, there are eight leap years, and between 2013 and 2043, there are seven leap years.

In a thirty-year cycle in which there are 7 leap years, this is equal to (24 x 365 x 23) + (24 x 366 x 7) = 262968 hours.

In a thirty-year cycle in which there are 8 leap years, this is equal to (24 x 365 x 22) + (24 x 366 x 8) = 262992 hours.