If you want to determine whether a year is a leap year. Use the cal command for the month of February. So to check 2012, for example, do:
cal 2 2012
and see if it prints 28 or 29 days.
LEAP
In an average year, there are 52 weeks. Hence in 42 years, there are 52 x 42 weeks = 2184 weeks. However, if you want to take the number of days + leap years into account (which occur every four years), then you must calculate using the number of days. Therefore, on average, there are 365.25 days per year (taking into account leap years). 365.25 x 42 = 15340.5 15340.5/7 = 2191.5 weeks. For a specific answer if you're calculating in terms of specific years, you would have to determine which year is the first leap year to determine how many leap years occur in the 42 years.
Only century years divisible by 400 qualify to be a leap year. Years divisible by 4 but by 100 are NOT leap years, thus 1700, 1800, and 1900 were not leap years but 2000 was. 2100, 2200 and 2300 will not be leap years but 2400 will be.
Yes, if the year is divisible by 4 then it is a leap year with this exception:A century year (year ending in 00) is only a leap year if it is divisible by 400So the years 1800, 1900, 3000 are not leap years, for example, but the year 1600, 2000 were leap years and the year 2400 will also be a leap year, if we are still using the same calendar then.
80 years = 2,524,651,960 secondsUsing: 1 year = 365.25636 days
315360000
2009
There will be a leap year every 4 years except if it is divisible by 100. However, if it is also divisible by 400, it will be a leap year. 2000 was a leap year because it is divisible by 400, but 2100 will not be a leap year.
No, but 2004 and 2008 were both leap years.
No, because the system of leap years that we use now did not exist then. We did not start using the current system until 1752.
Leap Years are years divisible by four, with two exceptions. 1. "Century" year numbers (divisible evenly by 100) are not leap years. 2. Years divisible evenly by 400 ARE leap years. So years like 1992 and 1996 were leap years. Century years like 1900 or 2100 are NOT leap years. But 2000 was a leap year, and 2400 will be.
There are 4 years between every leap year. Correction: There are 4 years between MOST leap years. That's the case 99.25% of the time. For the other 0.75% of the time, there are 8 years between leap years.