novi or stilo novo, abbreviated st.n. and meaning The Latin abbreviations may be capitalised differently by different users, e.g., St.n. or St.N. for stili novi. There are equivalents for these terms in other languages as well, such as the German a.St. ("alten Stils" for O.S.). See also Difference between Gregorian and Julian calendar dates (ready-reckoner) ("Old Christmas") Notes References Sources External links Untangling Lady Day dating and the Julian Calendar by Erin Blake (Folger Library) The Perpetual Calendar by Toke Nørby - Details of conversion for many countries Side-by-side Old style–New style reference by Petko Yotov Calendar Converter by John Walker Gregorian calendar Julian calendar Time in the United Kingdom