Question: When was Donatello called to Padua?
About the article "Donatello", section "In Padua".

Candidate passages:
In 1443, Donatello was called to Padua by the heirs of the famous condottiero Erasmo da Narni, who had died that year.
Completed in 1450 and placed in the square facing the Basilica of St. Anthony, his equestrian statue of Erasmo (better known as the "Gattamelata", or "Honey-Cat") was the first example of such a monument since ancient times.
(Other equestrian statues, from the 14th century, had not been executed in bronze and had been placed over tombs rather than erected independently, in a public place.)
This work became the prototype for other equestrian monuments executed in Italy and Europe in the following centuries.
For the Basilica of St. Anthony, Donatello created, most famously, the bronze Crucifix of 1444–1447 and additional statues for the choir, including a "Madonna with Child" and six saints, constituting a Holy Conversation, which is no longer visible since the renovation by Camillo Boito in 1895.
The "Madonna with Child" portrays the Child being displayed to the faithful, on a throne flanked by two sphinxes, allegorical figures of knowledge.
On the throne's back is a relief of Adam and Eve.
During this period—1446–50—Donatello also executed four extremely important reliefs with scenes from the life of St. Anthony for the high altar.
Mirage Comics.
In the comics, Donatello is originally presented along with Leonardo as one of the two calmer turtles.
While the comics portrayal of the team has no official command structure, in the early stories he is depicted as second-in-command.
In the first issue, he is the one that killed the Shredder by knocking him and his grenade off the roof.
The second issue elaborated more on each turtles' personalities and opened with Donatello soldering a circuit.
Later in the issue, Donatello states that he is "familiar with some computer systems" and helps April O'Neil deactivate the Mousers.
During the turtles' exile to Northampton, Donatello becomes obsessed with fixing up and repairing the many broken things within the farmhouse they were living in.
Most notably he spent days and nights fixing the boiler to give his family hot running water and builds a windmill and a water wheel to provide electricity.
He also finds an old type writer and writes his own personal credo.
In the Donatello one shot, Donatello encounters an artist called Kirby (an homage to the comic artist Jack Kirby) whose mysterious crystal brings his drawings to life before disappearing.
The two newfound friends journey to a dimension inhabited by Kirby's creations and help the heroes defeat the invading monsters.
In the "Shades of Grey" storyline, Casey Jones encounters the turtle by a ravine as he was pondering "the fractal structure of natural patterns".
Casey accuses the turtle of using big words and acting better than everyone else.
Donatello suggests they should continue the conversation when Casey is sober.
Grabbing a stick, an angry Jones continually pokes the turtle until he loses his temper and sends Casey careening into the water.
In the "City at War" storyline, the turtles return to New York to put an end to the Foot Clan's civil war.
During a battle with Shredder's Elite Guards in the ruins of the Second Time Around Shop, Donatello falls through the floor and breaks his leg.
Seeing their ally Karai subdued and about to be killed, Donatello grabs one of the Foot's machine guns and repeatedly shoots the Foot Elite.
Donatello is visibly shaken by the violence and throws the gun away.
At the end of the story the turtles, April and Casey move back to New York save for Donatello who chooses to stay in Northampton with Master Splinter to heal from his injury as well as reflect on everything that had happened.
While meditating with Splinter, Donatello receives a vision of the future where he is in the village of Chihaya in Japan.
When Donatello asks what he would be doing there, his master simply replies "To bury me".
After encountering the turtle vigilante ally Nobody in civilian guise he returns with him to New York to help his brothers battle Baxter Stockman.
In the current comics, Donatello finds an armored truck in the sewers which apparently had been part of a bank robbery in the sixties.
Along with Raphael and Casey Jones undertakes the task of fixing up the vehicle.
After the death of Splinter, Donatello secretly goes to his body and asks forgiveness before clipping something off him.
Shortly after, Donatello decides to accompany the Utroms on a mission to Tepui to search for two missing research teams.
The group are attacked by strange wooden creatures who shrink them to miniature size.
The creatures turn out to be a group of Utroms which had been stranded in the Jungle during their first stay on Earth and had been living in secret thanks to their Quantum Inversion Redimensioning device which could alter their size.
The process could not be reversed on Donatello, possibly due to his mutation, leaving him the size of an action figure.
While the Utroms work on returning him to normal, Donatello put his new size to use infiltrating a terrorist organizations warehouse.
He's also made a robotic body for him made to resemble a turtle to help him move around.
This incarnation of Donatello appeared in the "Turtles Forever" crossover special voiced by Christopher C. Adams. 
Documentation about the work is scarce.
The Renaissance art historian Giorgio Vasari mentions it as work with no flaws and a perfect anatomy.
Executed by Donatello when he was more than sixty years old, after he had spent a decade in Padua.
The dating has been established indirectly, basing on that of a copy from Neri di Bicci's workshop (now in the Museum of the Collegiate of Empoli), known to be from 1455.
In 1500 it was in the city's baptistery.
According to an Italian historian, it was seen by Charles VIII of France in the 1480s, when he was camped with his army near Florence.
The work was damaged by the 1966 flood of the Arno River.
A program of restoration was finished in 1972.
At the time that restoration was begun, the work was painted dull brown.
A restorer, beginning the restoration, while washing the feet of the Maddalena, discovered a tiny golden patch.
The restoration work thus included removal of all the darkness which had been applied at some negative time in history. 
Padua has long been famous for its university, founded in 1222.
Under the rule of Venice the university was governed by a board of three patricians, called the "Riformatori dello Studio di Padova".
The list of professors and alumni is long and illustrious, containing, among others, the names of Bembo, Sperone Speroni, the anatomist Vesalius, Copernicus, Fallopius, Fabrizio d'Acquapendente, Galileo Galilei, William Harvey, Pietro Pomponazzi, Reginald, later Cardinal Pole, Scaliger, Tasso and Sobieski.
It is also where, in 1678, Elena Lucrezia Cornaro Piscopia became the first woman in the world to graduate.
The university hosts the oldest anatomy theatre, built in 1594.
The university also hosts the oldest botanical garden (1545) in the world.
The botanical garden Orto Botanico di Padova was founded as the garden of curative herbs attached to the University's faculty of medicine.
It still contains an important collection of rare plants.
The place of Padua in the history of art is nearly as important as its place in the history of learning.
The presence of the university attracted many distinguished artists, such as Giotto, Fra Filippo Lippi and Donatello; and for native art there was the school of Francesco Squarcione, whence issued the great Mantegna.
Padua is also the birthplace of the famous architect Andrea Palladio, whose 16th-century "ville" (country-houses) in the area of Padua, Venice, Vicenza and Treviso are among the most beautiful of Italy and they were often copied during the 18th and 19th centuries; and of Giovanni Battista Belzoni, adventure-man, engineer and egyptologist.
The famous sculptor Antonio Canova produced his first work in Padua, one of which is among the statues of Prato della Valle (presently a copy is displayed in the open air, while the original is in the Musei Civici, Civic Museums).
One the most relevant places in the life of the city has certainly been The Antonianum.
Settled among Prato della Valle, the Saint Anthony church and the Botanic Garden it was built in 1897 by the Jesuit fathers and kept alive until 2002.
During World War II, under the leadership of P. Messori Roncaglia SJ, it became the center of the resistance movement against the Nazis.
Indeed, it briefly survived P. Messori's death and was sold by the Jesuits in 2004.
Some sites are trying to collect what can still be found of the college: (1) a non-profit pixel site is collecting links to whatever is available on the web; (2) a student association created in the college is still operating and connecting Alumni.
It also plays host to the majority of "Taming the Shrew" by William Shakespeare and in "Much Ado About Nothing" Benedick is named as "Signior Benedick of Padua.
"In Padua was born in 1905 and lived Paolo De Poli painter and enamellist, author of decorative panels and design objects, 15 times invited to the Venice Biennale.
The electronic musician Tying Tiffany was also born in Padua. 
It is widely known that the first attempts to form the town of Upata came towards 1739.
Nevertheless, it was on July 7, 1762 when Fray Antonio de Cervera founded the city with the name of "Village Yocoima of Saint Anthony of Padua" "(Villa del Yocoima, de San Antonio de Padua)"(Spanish), in honor to the Italian saint from Padua: Saint Anthony of Padua, when the Capucin missionaries brought the Catholic faith to the region.