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Assuming a 90 year spell includes 22 leap years, the number of days is equal to (68 x 365) + (22 x 366) = 24820 + 8052 = 32872 days. If the 90 year spell includes 23 leap years, the number of days is equal to (67 x 365) + (23 x 366) = 24455 + 8418 = 32873 days. 3 people found this useful.
The answer to this question is not always simple. Most of the time, it will equal the number of weeks in a year, but that's only true for some of the days of the week. Most years have 365 days, but a leap year has 366 days. That adds up to 52 weeks (where each week is exactly 7 days) PLUS 1 or 2 additional days.The year 2015 has exactly 365 days. Now if the year starts on a Tuesday in a non-leap year, you end up with 53 Tuesdays.Or if either of the first two days lands on a Tuesday during a leap year, then you can also get 53 Tuesdays.he answer to this question is not always simple. Most of the time, it will equal the number of weeks in a year, but that's only true for some of the days of the week. Most years have 365 days, but a leap year has 366 days. That adds up to 52 weeks (where each week is exactly 7 days) PLUS 1 or 2 additional days.