Noun
annus mirabilis (plural anni mirabiles)
A year that includes a multitude of significant and fateful events, be they disasters or successes.
Pearson, H. Essays of Oscar Wilde London: Meuthen & Co (1950:x) Catalogue no:5328/u 1891 turned out to be Wilde's annus mirabilis'', apart from his three collections he also produced his only novel. Source: Internet
The winter of 1818–19, though a difficult period for the poet, marked the beginning of his annus mirabilis in which he wrote his most mature work. Source: Internet
The time he spent staying home was later referred to as his Annus Mirabilis, the “year of wonders.” Source: Internet