Search results
Results From The WOW.Com Content Network
The leap year problem (also known as the leap year bug or the leap day bug) is a problem for both digital (computer-related) and non-digital documentation and data storage situations which results from errors in the calculation of which years are leap years, or from manipulating dates without regard to the difference between leap years and common years.
Normally, a year is a leap year if it is evenly divisible by four. A year divisible by 100 is not a leap year in the Gregorian calendar unless it is also divisible by 400. For example, 1600 was a leap year, but 1700, 1800 and 1900 were not. Some programs may have relied on the oversimplified rule that "a year divisible by four is a leap year".
On 5 January 1975, the 12-bit field that had been used for dates in the TOPS-10 operating system for DEC PDP-10 computers overflowed, in a bug known as "DATE75". The field value was calculated by taking the number of years since 1964, multiplying by 12, adding the number of months since January, multiplying by 31, and adding the number of days since the start of the month; putting 2 12 − 1 ...
A year may be a leap year if it is evenly divisible by 4. Years divisible by 100 (century years such as 1900 or 2000) cannot be leap years unless they are also divisible by 400. (For this reason ...
Check your calendars, California. We get an extra day this month. Whether you’ve realized it or not, 2024 is a leap year.Every four years (typically), a leap year occurs in February — making ...
For premium support please call: 800-290-4726 more ways to reach us
Lotus 1-2-3 assumes that 1900 is a leap year. This is incorrect as while 1900 is a year that is divisible by four, years divisible by 100 are not counted as leap years unless divisible by 400. [90] This bug persists today as its competitor, Microsoft Excel, still incorporates the bug to ensure compatibility with legacy Lotus 1-2-3 spreadsheets ...
That resulted in the years 1700, 1800, and 1900 losing their leap day, but 2000 adding one. Every other fourth year in all of these centuries would get it's Feb. 29. And with that the calendrical ...