**There is only about a month left until 2019 ends to enter a new year, 2020, the year of the rat.** Many people still ask each other, whether 2020 has a leap or not, if there is a leap, what month will it be and how many days will it have in a leap year?

Usually, we have 2 ways to calculate the calendar, that is the solar and lunar year calculation.

If calculated according to **the calendar year** , the Earth’s cycle around the Sun each year will have 365 days and 6 hours, ie 1/4 day. And this 1/4 day will be accumulated in 4 years, so after 4 calendar years we will have 1 extra day and that day will be a leap day in the next year after 4 non-leap years. So, according to the solar year, there is a leap year every 4 years.

We make our own convention, the solar leap day will be counted in February, ie the February of the leap year will have only 29 days.

Accordingly, years with multiples of 4 (divisible by 4) are considered leap years, but for the full century years, divide that year by 400 if divisible to be considered a leap year.

Most of the world is calculated according to the solar year, but for most Asians, it is usually the lunar year calculation method (also known as the lunar calendar or the lunar calendar). And according to the Asian **lunar calendar** , the Moon’s rotation with the Earth lasts only 29.53 days, so a year will have about 354 days (equivalent to 12 rotational cycles).

Compared to the calendar year, the difference is up to 11 days, and after 3 years it will be 33 days, which is more than 1 month. So, every 3 years there is 1 leap year, 5 years have 2 leap years, 19 years have 7 leap years,…

To calculate a leap year, we just need to use an extremely simple determination method that is to use division to find a leap lunar year: Divide the number of solar years of that year by 19, if the division is divisible. or have balances of 3, 6, 9, 11, 14, 17, that year will surely have a leap month.

The leap month of 2020 will be April 2020 (lunar calendar).

Specifically, we will take the year 2020:19, this division gives a remainder of 6 and so 2020 is a leap year according to the lunar calendar.

After determining that 2020 is a leap year, we continue to see what month 2020 will be leap and how many days will 2020 have?

The year 2020 will be a leap and leap year according to the lunar calendar and the leap month of 2020 will be April 2020 (lunar calendar).

Thus, **there will be 2 negative April in 2020.**

Normally in 2019 the lunar calendar has only 354 days, but in 2020 the lunar calendar has 384 days because 2020 is a leap year.