I found this here :
https://catholicsouthernfront.wordpress.com/st-malachy-papal-list/
The prophetic motto corresponding to Pope John Paul II is “De labore solis”, which literally means “Of the labor (work/giving birth) of the sun”; but “labor solis” is a common Latin expression that means a solar eclipse.
There are a variety of explanations that have been given to explain the motto:
Karol Jozef Wojtyła, who later became Pope John Paul II, was born on 18 May 1920, the day of a partial solar eclipse over the Indian Ocean, and buried on 8 April 2005, the day of a rare hybrid eclipse over the south-western Pacific and South America.
During World War II, Karol Wojtyła worked in a quarry, “laboring in the sunlight”.
It might also be seen to be the fruit of the intercession of the “Woman Clothed with the Sun labouring” in the Book of Revelation 12, because of his devotion to the Virgin Mary, to whose intercession he credited surviving an assassination attempt early in his papacy.
Also, he affirmed the importance of the reported messages of the Virgin Mary at Fatima, which had as its confirming event, the strange “solar miracle” or “sun spinning in the sky” event, reported in the secular media in 1917.
It has also been suggested that the associated Latin phrase could also be an anagram for “de borealis sol” (correct Latin: de boreali sol) or “a Sun from the North”, being a luminary coming from Poland which is north of Rome.
Another interpretation points simply to the sun rising in the east and his being the first Pope from Eastern Europe.
A further theory is that the combination of “labore” and “solis” cryptically refers to “the sun of the workers”, i.e., “the star of communism”, with John Paul being the only pope to have spent much of his life under a communist regime.
Said Pope rose in history together – and probably had special relationship with – the Gdansk “Solidarity” workers union. The logo of this union is the circle of the sun and some lines which represent its rays, plus the word “SOL” which is the beginning of the Polish Union name “Solidarity”.
Yet another theory exists among some traditionalist Catholics, who believe that the motto translates as “Eclipse of the Sun”. These Catholics view the Second Vatican Council as a fundamental departure of the Catholic faith. and that the differences between the church before and after the council are stark enough to regard the contemporary official Catholic Church as a new modernist church and not truly Catholic. The sun is so interpreted as the true Catholic faith, which has been eclipsed by the heterodoxy of the council teachings. They identify this time period as the Great Apostasy, that has been predicted for the End of Times.
John Paul II introduced the Luminous Mysteries to the Rosary.
During his pontificate, John Paul II traveled extensively all around the world, more than any other pope before, and similarly to what the sun does daily, from an earth-centric point of view.[67]
Also, I've looked into all the known birth dates of the popes, here :
https://catholic-hierarchy.org/bishop//spope3.html
I've correlated these with dates of eclipses throughout the centuries but so far no hits. Only JP II. I've made it as far down as 13th C.