What is a leap year and how to calculate leap years?
The length of one year is 365 days, 5 hours, 48 minutes and 45 seconds. This is difficult to calculate, so a regular year has been given 365 days and a leap year has been given 366 days.
In leap years, February 29th is added as a leap day, which does not occur in a regular year. A leap year is every 4 years, but not every 100 years, then every 400 years.
The year 2021 is a leap year?
The year 2021 is not a leap year. The last leap year was 2020, the next will be 2024.
The year of 2021 is of 365 days.
Special Leap Year 2000
The year 2000 was somewhat unique as it was the first instance when the third criterion was used in most parts of the world since the start of the transition from the Julian calendar to the Gregorian calendar in 1582.
List of leap years in the 21st century
The following is the complete list of leap years for the 21st century (from year 2001 to 2100):
2004, 2008, 2012, 2016, 2020, 2024, 2028, 2032, 2036, 2040, 2044, 2048, 2052, 2056, 2060, 2064, 2068, 2072, 2076, 2080, 2084, 2088, 2092, 2096.
List of leap years from 1900 to 2020
There are 30 leap years between 1900 and 2020:
1904, 1908, 1912, 1916, 1920, 1924, 1928, 1932, 1936, 1940, 1944, 1948, 1952, 1956, 1960, 1964, 1968, 1972, 1976, 1980, 1984, 1988, 1992, 1996, 2000, 2004, 2008, 2012, 2016, 2020
List of leap years from 1800 to 2400
| 1804 1808 1812 1816 1820 1824 1828 1832 1836 1840 1844 1848 1852 1856 1860 1864 1868 1872 1876 1880 1884 1888 1892 1896 | 1904 1908 1912 1916 1920 1924 1928 1932 1936 1940 1944 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 1996 2000 | 2004 2008 2012 2016 2020 2024 2028 2032 2036 2040 2044 2048 2052 2056 2060 2064 2068 2072 2076 2080 2084 2088 2092 2096 | 2104 2108 2112 2116 2120 2124 2128 2132 2136 2140 2144 2148 2152 2156 2160 2164 2168 2172 2176 2180 2184 2188 2192 2196 | 2204 2208 2212 2216 2220 2224 2228 2232 2236 2240 2244 2248 2252 2256 2260 2264 2268 2272 2276 2280 2284 2288 2292 2296 | 2304 2308 2312 2316 2320 2324 2328 2332 2336 2340 2344 2348 2352 2356 2360 2364 2368 2372 2376 2380 2384 2388 2392 2396 2400 |
How to determine whether a year is a leap year
To determine whether a year is a leap year, follow these steps:
- If the year is evenly divisible by 4, go to step 2. Otherwise, go to step 5.
- If the year is evenly divisible by 100, go to step 3. Otherwise, go to step 4.
- If the year is evenly divisible by 400, go to step 4. Otherwise, go to step 5.
- The year is a leap year (it has 366 days).
- The year is not a leap year (it has 365 days).
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