What's the birthday of leap April? How often can I have a birthday in April?

Lead: It is not easy for people born in leap months to think of a birthday. Today, let's see how many years their birthdays are in leap April. In fact, leap April still happens frequently, so you don't have to wait for many years to celebrate your birthday. Let's see how often you can celebrate your birthday in leap April.

In what year did leap April's birthday happen?

The last leap April was on 20 12. This year, the birthday of leap April will be celebrated in 2020, with an interval of 8 years, but the next leap April will appear in 2058.

Around 2 1 century, leap April is a common leap month, which usually occurs once every 8 years or 1 1 year, and once every 38 years at the longest, and the frequency is second only to leap May. However, the law is not static. As time goes on, the frequency of leap April is gradually decreasing.

What years are there in leap April?

1648, 1667, 1686, 1705, 1724, 1735, 1743, 1754.

18 19, 1830, 1838, 1849, 1868, 1887,19007.

1974， 1982，200 1，20 12，2020，2058，2069，2077，2088，2096。

2 107, 2 1 15, 2 126, 2 145, 2 164, 2 183, 2202, 22 10.

Years 2278, 2297, 23 16, 2335, 2346, 2365, 2384, 2392, 2430, 244 1.

At 2460, 2479, 2498, 25 17, 2536, 2555, 2566, 2574, 2582, 2593.

26 12，2650，2669，2688，2707，2756，2802，28 13，2832，2870。

In 1889, 1908, 1927, 1938, 1946, 1957, 1965.

3052, 3060, 307 1, 3079, 3090, 3 109, 3 128, 3 147, 3 166, 3 174.

3 185，3204，32 15，3242，326 1，3280，3299，33 10，3329，3367。

3394, 3405, 3424, 3443, 3462, 348 1, 3500, 35 19, 3538.

The reason for leap in April

The average value between two neutral gases is 365.2422÷ 12=30.4368 days, then 30 or 3 1 day. The earth's orbit around the sun is elliptical, and it runs very fast at the perihelion (vernal equinox and autumnal equinox), and the maximum interval between the two solar terms can reach 3 1.45 days.

On the other hand, the average lunar new moon is only 29.5306 days, including 29 days in the first lunar month and 30 days in the second lunar month. In this way, there will be such a situation: in some months (usually abortion), the last breath has passed at the beginning, and the next breath has not come at the end.

For example, 200 1 (Xinsi year of the snake), Xiaoman is May 2 1 (April 29th of the lunar calendar), and the first day of the next lunar month is May 23rd. However, this lunar month ends on June 20, and the summer solstice falls on June 2 1 day, so this lunar month is not "neutral", but in.

According to this leap rule, it will leap in July 2006, May 2009, April 20 12, September 20 14, June 20 17, April 2020 and February 2023.