Annus mirabilis is a Latin phrase that means wonderful year, "year of wonders" or "year of miracles". This term was originally used to refer to the year 1666 (see below), and today is used to refer to several years during which events of major importance are remembered.
According to the Oxford English Dictionary, the first known written usage of the Latin phrase "Annus Mirabilis" is as the title of a poem composed by English poet John Dryden about the events of 1666. The phrase "annus mirabilis" translates as "wonderful year" or "year of miracles". In fact, the year was beset by great calamity for England (including the Great Fire of London), but Dryden chose to interpret the absence of greater disaster as miraculous intervention by God, as "666" is the Number of the Beast and the year 1666 was expected by some to be particularly disastrous.
In addition to this, the English fleet defeated a Dutch fleet in the St James' Day Battle, for a great victory at sea. (However, in 1667 the Dutch burned several major warships of the English fleet in the raid on the Medway and Charles II was forced to sue for peace.)
A series of victories by the British military in 1759 in North America, Europe, India, and in various naval engagements, is occasionally referred to as William Pitt's annus mirabilis, and was the decisive year of the Seven Years' War.
1939 – This phrase has also been used to describe 1939 Hollywood because of all the classic films produced this year.
1944 - Used to describe the year that the Russian army trapped 25 of 33 German divisions in Operation Bagration one of the most sudden and complete military disasters in history. This contributed to ending WWII in Europe more than any other operation of the time. Andrew Robert's The Storm of War: A New History of the Second World War
1946 – The British Chancellor of the Exchequer Hugh Dalton described 1946 as the then Labour Government's 'Annus mirabilis'
1963 – The phrase "Annus Mirabilis" was also used by Philip Larkin as the title for one of his best-known poems, written in 1967 and published in High Windows (1974), which celebrated the onset of more relaxed sexual mores in 1960s Britain, specifically mentioning the year 1963 as a sort of personal "annus mirabilis".
1967 was Celtic F.C.'s annus mirabilis. The club won every competition they entered: the Scottish League, the Scottish Cup, the Scottish League Cup, the Glasgow Cup, and the European Cup (the quintuple).
1972 was Ajax A.F.C.'s annus mirabilis. The club won every competition they entered (4): Dutch league, European Cup, Dutch Cup and Intercontinental Cup (the Quadruple);  as well the European Supercup final match but this latter result was not recognized by UEFA, making it an unofficial quintuple.
mid-1970s – The phrase was used to describe the mid-1970s uptick in sugar prices which skyrocketed Cuban sugar-based earning.
^"Universal Gravitation – The Physics Hypertextbook". Retrieved December 10, 2012. "In the same year  I began to think of gravity extending to the orb of the moon, .... All this was in the two plague years of 1665 and 1666, for in those days I was in the prime of my age for invention, and minded mathematics and philosophy more than at any time since."
^"Newton's Birth Date and The Anni Mirabiles". Retrieved December 10, 2012. "In the beginning of the year 1665 I found the Method of approximating series & the Rule for reducing any dignity of any Binomial into such a series. The same year in May I found the method of Tangents of Gregory & Slusius, & in November had the direct method of fluxions & the next year in January had the Theory of Colors & in May following I had entrance into the inverse method of fluxions. And the same year I began to think of gravity extending to the orb of the Moon & (having found out how to estimate the force with which a globe revolving within a sphere presses the surface of the sphere) from Keplers rule of the periodical times of the Planets being in sesquialterate proportion of their distances from the centers of their Orbs, I deduced that the forces which keep the Planets in their Orbs must be reciprocally as the squares of their distances from the centers about which they revolve: and thereby compared the force requisite to keep the Moon in her Orb with the force of gravity at the surface of the earth ... All this was in the two plague years of 1665 and 1666. For in those days I was in the prime of my age of invention & minded Mathematics & Philosophy more than at any time since."