it is 12,775 because a year is 365 and 365 times 35= 12,775.
The 35 years from the beginning of 1977 through the end of 2011 is 12,783 days.
About 12,783.575 days.
13,149 including 9 leap years.
Common years have 365 days, including 28 days in February. Leap years have 366 days, including 29 days in February.
There are about 1460 days in 4 years not including leap years.
67
Leap year every 4 years, so there are 10 leap years: (365 x 40) + 10 = 14,610 days
67
20 leap years.
114 years, with a remainder of 125 days (not including leap years)
Including leap years: 24,115,500,000 days.
36,890. (Including leap years)
378,432,000 not including leap days.
25,567 (including an extra day for leap years).