What is the probability of meeting Tomb-Sweeping Day on the third day of the third lunar month? How many years will it take to meet each other?

878—— Tomb-Sweeping Day: Lunar calendar (the third day of March) and solar calendar (the fifth day of April).

1897—— Tomb-Sweeping Day: Lunar calendar (March 3rd) and Gregorian calendar (April 4th).

19 16—— Tomb-Sweeping Day: Lunar calendar (March 3rd) Gregorian calendar (April 5th).

1935 ?

1954—— Tomb-Sweeping Day: Lunar calendar (March 3rd) and Gregorian calendar (April 5th).

1973—— Tomb-Sweeping Day: Lunar calendar (March 3rd) and Gregorian calendar (April 5th).

1992 ?

20 1 1—— Tomb-Sweeping Day: Lunar calendar (March 3rd) Gregorian calendar (April 5th).

2030-Tomb-Sweeping Day: Lunar calendar (March 3rd) and solar calendar (April 5th).

In 2049, Tomb-Sweeping Day: Lunar calendar (March 3rd) and solar calendar (April 4th).

From the above list, if 1935 1992 is left out, other years will be left out, and the interval between them is 19.

Now let me talk about the specific time of 1935 1992 in Tomb-Sweeping Day:

1935—— Tomb-Sweeping Day: Lunar calendar (fourth day of March) and solar calendar (sixth day of April).

1992—— Tomb-Sweeping Day: Lunar calendar (the second day of March) and solar calendar (the fourth day of April).

Because 1992 is a leap year, one day short, but 1935 is not a leap year. In fact, Tomb-Sweeping Day's solar calendar is either on April 4th or 5th every year (that is, the lunar calendar is not on March 3rd), but 1935 is a bit special. If it is not a special year, I don't know why it should be 19 once. There is also this rule in the solar terms. Most people's 19 birthdays will be on the same day in the lunar calendar. Of course, some people are exceptions. As mentioned above, those two years in Tomb-Sweeping Day may be that year.